AGREEMENT AND PLAN OF MERGER


                  AGREEMENT  AND PLAN OF MERGER made as of June 11, 1999, by and
among Base Ten Systems,  Inc.,  a New Jersey  corporation  having its  principal
office at One Electronics Drive, Trenton, New Jersey 08619, ("Base Ten"), Ex-BTS
Clinical,  Inc., a New Jersey  corporation  wholly-owned  by Base Ten having its
principal office at One Electronics  Drive,  Trenton,  New Jersey 08619 ("BTSC")
(Base  Ten and BTSC  collectively  referred  to as the  "Purchasers"),  Almedica
International  Inc., a Delaware  corporation  having its principal  office at 75
Commerce  Drive,  Allendale,   New  Jersey  07401  ("Almedica"),   and  Almedica
Technology Group Inc., a New Jersey corporation  wholly-owned by Almedica having
its principal  office at 900 Lanidex Plaza,  Suite 202,  Parsippany,  New Jersey
07054 ("ATG") (Almedica and ATG collectively referred to as the "Sellers").

                  WHEREAS, Almedica owns 736 shares of common stock, without par
value,  of ATG,  which  Almedica  represents  constitute  all of the  issued and
outstanding capital stock of ATG; and

                  WHEREAS, Base Ten owns 100 shares of common stock, without par
value,  of BTSC,  which  Base Ten  represents  constitute  all of the issued and
outstanding capital stock of BTSC;

                  WHEREAS,  Almedica  desires to sell,  and Base Ten  desires to
purchase,  ATG by means of a merger of BTSC with and into ATG (the  "Merger") in
accordance  with the laws of the State of New Jersey and the  provisions of this
Agreement; and

                  WHEREAS,  Capitalized  terms  used in this  Agreement  but not
defined upon their first usage are defined in Section 8.1.

                  NOW,  THEREFORE,  in consideration of the mutual covenants and
agreements  set  forth  in this  Agreement,  and for  other  good  and  valuable
consideration, the receipt and sufficiency of which are hereby acknowledged, the
Parties hereto agree as follows:


                                    ARTICLE 1

                                   THE MERGER

         1.1      The Merger

                  (a) The Merger. At the Effective Time (as defined below), BTSC
will be merged with and into ATG. ATG shall be the surviving  corporation in the
Merger and shall become a wholly-owned subsidiary of Base Ten.

                           At the Effective Time;

                          (i) the Certificate of  Incorporation  of ATG shall be
the certificate of incorporation of the surviving corporation;

                          (ii)  the  bylaws  of  ATG,  as in  force  and  effect
immediately  prior to the Effective  Time,  shall be the bylaws of the surviving
corporation;

                          (iii)  the  Board  of  Directors   of  the   surviving
corporation shall be those persons listed as directors on Schedule 1.1(a)(iii);

                          (iv) the officers of the surviving corporation and the
positions held by each of them shall be as set forth on Schedule 1.1(a)(iv); and

                          (v) the  separate  corporate  existence  of BTSC shall
cease,  and ATG,  as the  surviving  corporation,  shall  succeed  to all of the
rights,  privileges,  powers and franchises, of a public as well as of a private
nature,  of ATG and  BTSC,  and  shall  be  responsible  for  all of the  debts,
liabilities  and duties of ATG and BTSC,  all as more fully set forth in Chapter
10 of the New Jersey Business Corporation Act.

                  (b) Conversion of Shares.  At the Effective Time, by virtue of
the Merger and without any action on the part of any stockholder of BTSC or ATG:

                          (i) each  share of  capital  stock of BTSC  issued and
outstanding  immediately prior to the Effective Time shall be converted into and
become one share of the surviving corporation;

                          (ii) all 736 shares of capital stock of ATG issued and
outstanding  immediately prior to the Effective Time (the "ATG Shares") shall be
converted  into and become an aggregate  of  3,950,000  shares of Class A Common
Stock of Base Ten (the "Base Ten Shares"); and

                          (iii) each share of capital  stock of ATG that is held
in the  treasury of ATG shall be cancelled  and retired and no capital  stock of
Base Ten,  cash or other  consideration  shall be paid or  delivered in exchange
therefor.

                  (c) Fractional Shares. Base Ten shall not be required to issue
any fractional  shares of Base Ten Shares in connection  with the Merger and the
number of shares of Base Ten Shares to be issued to Almedica in connection  with
the Merger shall be rounded down to the nearest whole number.

                  (d) Issuance of Certificates.  At the Effective Time, Base Ten
shall make available to Almedica,  and Almedica will be entitled to receive upon
surrender to Base Ten of one or more  certificates  representing  the ATG Shares
for  cancellation,  certificates  representing  the Base Ten Shares,  subject to
Section 1.4. The Base Ten Shares into which the ATG Shares shall be converted in
the  Merger  shall be  issued  by Base Ten free and  clear of any  encumbrances,
except as otherwise provided in Section 1.4.

                  (e) Name Change.  Upon filing with the New Jersey  Division of
Commercial  Recording a  certificate  of merger in such form as required by, and
executed  in  accordance  with,  this  Agreement  and  the New  Jersey  Business
Corporation Act (the "New Jersey Merger Certificate"),  and as a part of the New
Jersey Merger Certificate, the name of the surviving corporation shall change to
"BTS  Clinical,  Inc." and the  certificate  of  incorporation  of the surviving
corporation  shall be amended to read, in its entirety,  in accordance  with the
certificate of incorporation thereof attached thereto.

         1.2 Tax  Treatment.  The Parties  intend  that the Merger  qualify as a
tax-free  reorganization  within the  meaning of Section  368 of the Code.  Each
Party agrees that it will use all commercially reasonable efforts to assure that
the Merger shall so qualify, and Base Ten agrees that subsequent to the Closing,
neither  it nor the  surviving  corporation  will take any  action,  or take any
position  in a Tax  Return,  that may  reasonably  be  expected to result in the
failure of the Merger to so qualify.

         1.3  Effective  Time and Closing.  The closing  shall take place at the
offices of Pitney,  Hardin,  Kipp & Szuch,  200 Campus Drive,  Florham Park, New
Jersey 07932-0950,  concurrently with the execution hereof,  commencing at 10:00
a.m.  local time (the  "Closing").  The date and time of the  Closing are herein
referred to as the "Closing Date."

                  At the Closing:

                  (a)      Purchasers shall deliver to Sellers:

                          (i)  certificates  representing  the Base Ten  Shares,
subject to delivery of a portion  thereof,  by Sellers,  to the Escrow  Agent in
accordance with Section 1.3(c).

                          (ii) an Officer's  Certificate  of Base Ten, dated the
Closing Date, stating the following:

                                    (A) Each  representation  and  warranty  set
forth in  Article  3 is true and  correct  in all  material  respects  as of the
Closing;

                                    (B)   Purchasers   have   performed  in  all
material respects each covenant or other obligation  required to be performed by
them pursuant to the Transaction Documents prior to the Closing;

                                    (C)  The  consummation  of the  transactions
contemplated  by the  Transaction  Documents will not be prohibited by any Legal
Requirement  or subject  Sellers to any penalty or liability  arising  under any
Legal Requirement or imposed by any Government Entity;

                                    (D) No action, suit or proceeding is pending
or threatened  before any Government Entity the result of which could prevent or
prohibit  the  consummation  of any  transaction  pursuant  to  the  Transaction
Documents,   cause  any  such   transaction  to  be  rescinded   following  such
consummation or adversely  affect  Purchasers  performance of their  obligations
pursuant  to  the  Transaction  Documents,  and  no  judgment,   order,  decree,
stipulation, injunction or charge having any such effect exists; and

                                    (E)   All   filings,   notices,    licenses,
consents, authorizations,  accreditation, waivers, approvals and the like of, to
or with any  Government  Entity or any other  Person that are  required  for the
Purchasers to consummate the Merger or any other transaction contemplated by the
Transaction  Documents  or to own the ATG  Shares  or to  conduct  the  Business
thereafter (the "Purchasers' Consents") have been duly made or obtained.

                          (iii) a copy of the  resolutions  duly adopted by Base
Ten's  board  of  directors  authorizing  Base  Ten's  execution,  delivery  and
performance  of the  Transaction  Documents to which Base Ten is a party and the
consummation  the  Merger  and  all  other  transactions   contemplated  by  the
Transaction Documents,  as in effect as of the Closing,  certified by an officer
of Base Ten;

                          (iv) a copy of the resolutions  duly adopted by BTSC's
board of directors authorizing BTSC's execution, delivery and performance of the
Transaction  Documents  to which  BTSC is a party  and the  consummation  of the
Merger and all other transactions  contemplated by the Transaction Documents, as
in effect as of the Closing, certified by an officer of BTSC;

                          (v) a copy of the resolutions duly adopted by Base Ten
as the shareholder of BTSC approving the Merger and this Agreement, certified by
an officer of BTSC;

                          (vi) a certificate  (dated not less than five business
days prior to the Closing) of the Treasurer of the State of New Jersey as to the
good standing of Base Ten and BTSC in New Jersey;

                          (vii) copies of the Purchasers' Consents;

                          (viii)   such   other   documents   relating   to  the
transactions  contemplated by the Transaction Documents to be consummated at the
Closing as Sellers reasonably request.

                  (b)      Sellers shall deliver to Purchasers:

                          (i) an Officer's  Certificate  of Almedica,  dated the
Closing Date, stating the following:

                                    (A) Each  representation  and  warranty  set
forth in  Article  4 is true and  correct  in all  material  respects  as of the
Closing;

                                    (B) Sellers  have  performed in all material
respects  each  covenant or other  obligation  required to be  performed by them
pursuant to the Transaction Documents prior to the Closing;

                                    (C)  The  consummation  of the  transactions
contemplated  by the  Transaction  Documents will not be prohibited by any Legal
Requirement or subject Purchasers, any of the ATG Shares or any of the Assets to
any penalty or liability  arising under any Legal  Requirement or imposed by any
Government Entity;

                                    (D) No action, suit or proceeding is pending
or threatened  before any Government Entity the result of which could prevent or
prohibit  the  consummation  of any  transaction  pursuant  to  the  Transaction
Documents,   cause  any  such   transaction  to  be  rescinded   following  such
consummation or adversely  affect  Purchasers'  right to conduct the Business or
Sellers' performance of their obligations pursuant to the Transaction Documents,
and no judgment,  order,  decree,  stipulation,  injunction or charge having any
such effect will exist; and

                                    (E)   All   filings,   notices,    licenses,
consents, authorizations,  accreditation, waivers, approvals and the like of, to
or with any  Government  Entity or any other  Person that are  required  for the
Sellers to consummate the Merger or any other  transaction  contemplated  by the
Transaction  Documents  or to own and  transfer  the ATG  Shares or  permit  the
conduct of the Business by Purchasers  thereafter (the "Sellers' Consents") have
been duly made or obtained.

                          (ii) a copy of the  resolutions  duly adopted by ATG's
board of directors authorizing ATG's execution,  delivery and performance of the
Transaction  Documents to which ATG is a party and the  consummation  the Merger
and all other  transactions  contemplated  by the Transaction  Documents,  as in
effect as of the Closing, certified by an officer of ATG;

                          (iii)  a  copy  of the  resolutions  duly  adopted  by
Almedica's board of directors  authorizing  Almedica's  execution,  delivery and
performance  of the  Transaction  Documents to which Almedica is a party and the
consummation  of the  Merger  and all  other  transactions  contemplated  by the
Transaction Documents,  as in effect as of the Closing,  certified by an officer
of Almedica;

                          (iv)  a  copy  of  the  resolutions  duly  adopted  by
Almedica as the  shareholder  of ATG  approving  the Merger and this  Agreement,
certified by an officer of ATG;

                          (v) a  certificate  (dated not less than five business
days prior to the Closing) of the Secretary of State (or, as to New Jersey,  the
Treasurer)  of each state listed on Schedule  4.1(a) as to the good  standing of
ATG in such states and a  certificate  (dated not less than five  business  days
prior to the  Closing)  of the  Secretary  of State of  Delaware  as to the good
standing of Almedica in Delaware;

                          (vi) the Books and Records; provided,  however, to the
extent that the Books and Records are located at Almedica's  principal office in
Allendale,  New Jersey,  such Books and Records shall be delivered to Purchasers
within 48 hours following the Closing;

                          (vii) copies of the Sellers' Consents;

                          (viii)  written  resignations  from each  director and
officer of ATG from such  directorships  and  offices,  to take effect as of the
Closing; and

                          (ix) such other documents relating to the transactions
contemplated by the Transaction Documents as Purchasers reasonably request.

                  (c)  Almedica  shall  deliver  to  Escrow  Agent  certificates
representing  the Base Ten Shares  constituting  the Escrow  Amount (as  defined
below),  together with a stock power  executed by Almedica in blank with respect
to each such certificate.

                  (d)  Base  Ten  and  each  of   Robert   J.   Bronstein,   Fay
Mannon-Rahio,  Alex Boyce,  Tony Heeley and Garth Ralston shall have executed an
employment agreement and an option agreement.

                  (e)      Purchasers and Sellers shall:

                          (i) file with the Division of Commercial  Recording of
the State of New Jersey the New Jersey Certificate of Merger;

                          (ii)  execute and deliver a supply  agreement  in form
and substance satisfactory to Almedica and Base Ten; and

                          (iii)  execute  and deliver  the  Registration  Rights
Agreement (as defined below).

                  The date  and time  that the  filing  referred  to in  Section
1.3(e)(i) has been completed is herein referred to as the "Effective Time."

         1.4 Escrow Amount.  Of the Base Ten Shares,  1,580,000 shares otherwise
payable to  Almedica  pursuant  to Section  1.1 (the  "Escrow  Amount")  will be
retained by Pitney,  Hardin, Kipp & Szuch,  counsel to Purchasers,  (the "Escrow
Agent") as security for the faithful performance of the indemnity obligations of
Almedica to  Purchasers  under Section 6.2 and,  without  prejudice to any other
rights of Purchasers,  will be subject to recovery by Purchasers as specifically
provided in this Agreement.  Subject to the terms of this Agreement and less any
shares  which shall be subject to recovery as provided in Section  1.5,  (i) the
shares  constituting  one-half  of the Escrow  Amount will be released by Escrow
Agent to Almedica,  not later than ten  business  days after the  completion  of
thirteen full calendar  months  following the date of this Agreement (the "First
Release  Date"),  and (ii) the  shares  constituting  the  balance of the Escrow
Amount will be released by Escrow  Agent to Almedica not later than ten business
days after the second  anniversary  of the date of this  Agreement  (the "Second
Release Date"). Cash dividends or stock dividends and any other distribution, if
any,  payable on the shares of Base Ten's  common  stock  comprising  the Escrow
Amount will be held by Escrow  Agent  subject to the terms of this  Section 1.5,
but  Almedica  shall have all voting  rights with  respect to the shares of Base
Ten's common stock  comprising  the Escrow  Amount and any stock issued as stock
dividends with respect thereto and while it is so held by the Escrow Agent,  but
any such shares so issued as dividends  shall be subject to recovery as provided
in this  Agreement.  Base Ten and Almedica  shall, in accordance with the Escrow
Agreement  executed  and  delivered by them on the date  hereof,  provide  joint
written  instructions  to the  Escrow  Agent on the First  Release  Date and the
Second  Release Date with respect to  distributions  of the Escrow Amount as set
forth in the Section 1.4, unless any such  distribution is subject to a dispute,
in which case Base Ten and Almedica will follow the procedures set forth in this
Agreement regarding notice and resolution of any such dispute.

         1.5  Recovery  Against  Escrow  Amount.  Base Ten shall give  notice in
writing to  Almedica  of any claim  against the Escrow  Amount  (such  notice to
contain  the  details  of the claim  giving  rise  thereto  and the  calculation
thereof),  and will proceed to recover the amount of such claim against Almedica
in the event that  Almedica  does not  respond  in writing  within 60 days after
receipt of such notice. In the event Almedica disputes the claim,  Almedica will
be entitled (a) if such dispute is attributable to accounting  issues, to engage
a firm of independent  public  accountants at the expense of Almedica to examine
the claimed recovery and to deliver a notice to Base Ten confirming or disputing
its validity or the amount thereof,  or (b) if such dispute is not  attributable
to accounting  issues, to deliver a notice to Base Ten disputing its validity or
amount thereof (in either case, the "Dispute Notice").  The Dispute Notice shall
be given within 60 days after Base Ten's original notice of such claim. Base Ten
shall  provide  Almedica  and any  independent  public  accountants  retained by
Almedica  with  access to such  books and  records  of ATG as may be  reasonably
requested by Almedica for purposes of verifying  Base Ten's claim.  Almedica and
duly  authorized  representatives  of  Base  Ten  shall  in good  faith  meet at
reasonable  times and places  agreed to by them so as to come to a settlement of
the matter.  In the event a settlement is not achieved  within 30 days after the
date  of the  Dispute  Notice,  (x)  if  the  dispute  relates  to or  otherwise
encompasses  accounting  issues,  Base  Ten and  Almedica's  independent  public
accountants  will have 30  additional  days in which to engage  another  firm of
independent  public  accountants which is unaffiliated with Base Ten or Almedica
(and which has not  performed  any work for any of the foregoing or any of their
Affiliates within the 24-month period preceding the date of the Dispute Notice),
which  expenses  shall be borne  jointly by Base Ten and  Almedica,  to render a
binding  opinion on the  dispute,  and (y) if the dispute  does not relate to or
otherwise encompass accounting issues, the Parties may pursue any and all rights
or remedies  available  to them at law or in equity.  In the event any  proposed
recovery is pending on the First  Release  Date or the Second  Release  Date,  a
portion of the Escrow  Amount  scheduled  to be  released  on that date which is
reasonably necessary to satisfy such pending claim may be retained by the Escrow
Agent until the claim is resolved,  and shall  thereafter be  distributed by the
Escrow Agent in accordance with the joint  instructions of Base Ten and Almedica
in  accordance  with  the  resolution  of  such  dispute.   Notwithstanding  the
foregoing,  the resolution of any indemnification claims attributable to a claim
by a third  party shall be resolved  pursuant to Sections  6.1 and 6.4,  and the
resolution  thereof  shall not be subject to further  dispute under this Section
1.5.

         1.6  Registration  Rights.  The Base Ten  Shares  will be  entitled  to
registration  rights,  as and to the extent provided in the registration  rights
agreement  to be  executed on the Closing  Date in the form  attached  hereto as
Exhibit A (the "Registration Rights Agreement").

         1.7 Listing Base Ten Shares.  Base Ten shall,  within 20 days after the
date hereof,  apply to The Nasdaq Stock Market,  for listing thereon of the Base
Ten Shares if Base Ten is then eligible for such listing.

         1.8 Restrictions on  Transferability  of Base Ten Shares.  The Base Ten
Shares to be  issued  and  delivered  to  Almedica  pursuant  to this  Agreement
(including  the  Escrow  Amount),  will  not  have  been  registered  under  the
Securities  Act, or under the securities  laws of any state.  Accordingly,  such
shares of Base Ten (together with any other shares of Base Ten received pursuant
to stock splits, stock dividends or other  reclassifications or changes thereof,
or  consolidations  or  reorganizations  of Base Ten)  will not be  transferable
except upon the conditions  specified in this  Agreement,  which  conditions are
intended to insure  compliance  with the  provisions  of the  Securities  Act in
respect of any transfer thereof.

         1.9 Legend.  Each certificate  comprising the Base Ten Shares issued to
Almedica shall bear a legend in substantially the following form (the "Legend"):

         THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN
         REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE
         "SECURITIES  ACT"),  OR  UNDER  THE  SECURITIES  LAWS OF ANY
         STATE.  SUCH  SECURITIES MAY NOT BE SOLD OR OFFERED FOR SALE
         OR OTHERWISE HYPOTHECATED OR DISTRIBUTED EXCEPT (A) PURSUANT
         TO AN EFFECTIVE  REGISTRATION  STATEMENT FOR SUCH SECURITIES
         UNDER  THE  SECURITIES  ACT,  OR  (B)  PURSUANT  TO A  VALID
         EXEMPTION  FROM SUCH  REGISTRATION  UNDER THE SECURITIES ACT
         AND UNDER THE  SECURITIES  LAW OF ANY STATE AND UPON RECEIPT
         BY  BASE  TEN  SYSTEMS,   INC.  OF  AN  OPINION  OF  COUNSEL
         SATISFACTORY  IN FORM AND SUBSTANCE TO IT THAT ANY SUCH SALE
         IS IN COMPLIANCE WITH, OR NOT SUBJECT TO, THE SECURITIES ACT
         AND STATE SECURITIES LAWS."

                  The Legend shall be removed and Base Ten shall issue, or shall
cause to be issued,  certificates  without the Legend,  if (a) the shares can be
sold pursuant to Rule 144,  other than Rule 144(k),  Almedica  provides Base Ten
with reasonable  assurances that the shares can be so sold without  restriction,
and a registered broker dealer provides to Base Ten's transfer agent and counsel
copies of (i) a "will sell" letter satisfying the guidelines  established by the
SEC and its staff from time to time,  (ii) a customary  seller's  representation
letter with  respect to such a sale to be made  pursuant to Rule 144 and (iii) a
Form 144 in respect of the shares  executed by Almedica and filed (or mailed for
filing) with the SEC, or (b) the shares can be sold pursuant to Rule 144(k).


                                    ARTICLE 2

                                 CONFIDENTIALITY

         The  Parties  acknowledge  their  respective   continuing   obligations
pursuant to the  confidentiality  agreement  between Base Ten and Almedica dated
January 26, 1999 (the "Confidentiality Agreement").


                                    ARTICLE 3

                  REPRESENTATIONS AND WARRANTIES OF PURCHASERS

         As a material  inducement  to  Sellers  to enter  into this  Agreement,
Purchasers hereby represent and warrant to Sellers that:

         3.1      Organization.

                  (a) Base Ten is a corporation duly organized, validly existing
and in good standing under the laws of the State of New Jersey. Base Ten has the
requisite   corporate  power  and  authority  and  all  licenses,   permits  and
authorizations  necessary to enter into,  deliver and carry out its  obligations
pursuant to the Transaction Documents to which it is a party.

                  (b) BTSC is a corporation duly organized, validly existing and
in good standing under the laws of the State of New Jersey and is duly qualified
to do  business  in the State of New Jersey.  BTSC has the  requisite  corporate
power and authority and all licenses,  permits and  authorizations  necessary to
enter into,  deliver and carry out its  obligations  pursuant to the Transaction
Documents to which it is a party. BTSC was formed by Base Ten for the purpose of
entering into the transactions  contemplated by the Transaction  Documents,  and
except for the rights and  obligations  created by this  Agreement,  BTSC has no
assets,  liabilities  or operations  of any nature.  BTSC has not engaged in any
business  activities or conducted any operations  other than in connection  with
the transactions contemplated by this Agreement.

         3.2      Capitalization.

                  (a) The  authorized  capital stock of Base Ten consists of (i)
60,000,000  shares of Class A Common  Stock,  $1.00 par  value per  share,  (ii)
2,000,000  shares of Class B Common Stock,  $1.00 par value per share, and (iii)
994,200.9375  shares of  Preferred  Stock,  $1.00 par value per share,  of which
15,203.66584473  shares have been  designated as Convertible  Preferred  Shares,
Series B. As of May 27, 1999, there were 21,231,834 shares of Base Ten's Class A
Common  Stock  outstanding,  71,144  shares of Base Ten's  Class B Common  Stock
outstanding,  and  15,203.66584473  shares of Base Ten's  Convertible  Preferred
Shares,  Series B outstanding.  As of May 27, 1999, a total of 10,658,779 shares
of Base Ten's  Class A Common  Stock were  reserved  for  issuance  pursuant  to
outstanding  securities that are convertible  into or exchangeable for shares of
Base Ten's  Class A Common  Stock,  and no shares of Base  Ten's  Class B Common
Stock were reserved for issuance  pursuant to  outstanding  securities  that are
convertible  into or exchangeable for shares of Base Ten's Class B Common Stock.
Except for interests pursuant to which shares have been reserved for issuance as
set forth in the  preceding  sentence,  there are no  outstanding  or authorized
options,  warrants,  purchase rights,  subscription  rights,  conversion rights,
exchange rights or other contracts or commitments that could require Base Ten to
issue, sell or otherwise cause to become outstanding any of its capital stock or
equity interests or other instruments convertible into such interests.

                  (b) The  authorized  capital  stock of BTSC  consists of 2,500
shares of common  stock,  without par value,  of which 100 shares are issued and
outstanding. All of such issued and outstanding shares are owned by Base Ten.

         3.3  Validity of Base Ten  Shares.  The Base Ten Shares to be issued in
the Merger are duly  authorized  and will,  when issued in  accordance  with the
terms hereof,  be validly issued,  fully paid and  non-assessable,  and free and
clear of any pre-emptive rights of the stockholders of Base Ten.

         3.4      Authorization; Binding Effect; No Breach.

                  (a) Base Ten's  execution,  delivery and  performance  of each
Transaction Document to which it is a party has been duly authorized by it. Each
Transaction  Document  to which  Base  Ten is a party  constitutes  a valid  and
binding  obligation  of Base  Ten  which  is  enforceable  against  Base  Ten in
accordance with its terms.  The execution,  delivery and performance by Base Ten
of the  Transaction  Documents  to  which  it is a party do not and will not (i)
conflict with or result in a breach of the terms,  conditions or provisions  of,
(ii) constitute a default under, (iii) result in a violation of, or (iv) require
any  authorization,   consent,  approval,   exemption  or  other  action  by  or
declaration  or notice to any  Government  Entity  pursuant  to, the  charter or
bylaws of Base Ten or any agreement, instrument, or other document, or any Legal
Requirement, to which Base Ten or any of its assets is subject.

                  (b)  BTSC's  execution,   delivery  and  performance  of  each
Transaction Document to which it is a party has been duly authorized by it. Each
Transaction  Document to which BTSC is a party  constitutes  a valid and binding
obligation  of BTSC which is  enforceable  against BTSC in  accordance  with its
terms.  The  execution,  delivery  and  performance  by BTSC of the  Transaction
Documents to which it is a party do not and will not (i) conflict with or result
in a breach of the terms, conditions or provisions of, (ii) constitute a default
under,  (iii)  result in a  violation  of, or (iv)  require  any  authorization,
consent, approval,  exemption or other action by or declaration or notice to any
Government  Entity  pursuant to, the charter or bylaws of BTSC or any agreement,
instrument, or other document, or any Legal Requirement, to which BTSC or any of
its assets is subject.

         3.5  Governmental  Filings.  Other  than the  filing of the New  Jersey
Merger Certificate, no notices, reports or other filings are required to be made
by Purchasers with, nor are any consents,  registrations,  approvals, permits or
authorizations required to be obtained by Purchasers from, any Government Entity
in connection  with the  execution and delivery of this  Agreement by Purchasers
and  the  consummation  of the  transactions  contemplated  by  the  Transaction
Documents.

         3.6 Base Ten Reports; Financial Statements. Base Ten has filed with the
SEC  each  registration  statement,   report,  proxy  statement  or  information
statement  required  to be filed by it since  January 1, 1999  through  the date
hereof,  including  (i) Base Ten's Annual Report on Form 10-K for the year ended
December 31, 1998, as amended, (ii) Base Ten's Quarterly Report on Form 10-Q for
the calendar  quarter ended March 31, 1999, and (iii) Base Ten's Proxy Statement
for its 1999  Annual  Meeting  of  Stockholders  (collectively,  the  "Base  Ten
Reports"),  copies of which have been made  available  to  Sellers.  As of their
respective dates, the Base Ten Reports did not contain any untrue statement of a
material fact or omit to state a material fact required to be stated  therein or
necessary to make the statements made therein,  in light of the circumstances in
which  they  were  made,  not  misleading.  As of their  respective  dates,  the
consolidated  financial  statements included in the Base Ten Reports complied as
to form in all material  respects with then applicable  accounting  requirements
and the published rules and regulations of the SEC with respect thereto. Each of
the  consolidated  balance sheets  included in or incorporated by reference into
the Base Ten Reports (including the related notes and schedules) fairly presents
in all material respects the consolidated financial position of Base Ten and its
subsidiaries  as of its date and each of the  consolidated  statements of income
and of changes in cash flows included in or  incorporated  by reference into the
Base Ten Reports  (including any related notes and schedules) fairly presents in
all material  respects the results of operations  and changes in cash flows,  as
the case may be, of Base Ten for the periods set forth therein (subject,  in the
case of unaudited statements,  to the absence of notes and normal year-end audit
adjustments),  in each  case in  accordance  with  GAAP,  except as may be noted
therein.

         3.7 Absence of Certain  Changes.  Except as  disclosed  in the Base Ten
Reports  filed prior to the date hereof,  since January 1, 1999 Base Ten and its
subsidiaries  have conducted their  respective  businesses only in, and have not
engaged in any material transaction other than in, the ordinary and usual course
of such  businesses  and there has not been any material  adverse  change in the
financial  condition,  business,  prospects or results of operations of Base Ten
and its subsidiaries from January 1, 1999 through the date of this Agreement.

         3.8 Litigation. There are no civil, criminal or administrative actions,
suits, claims, hearing, investigations, arbitrations, or proceedings pending or,
to the knowledge of Purchasers,  threatened  against Purchasers  preventing,  or
which,  if determined  adversely to Base Ten would prevent Base Ten or BTSC from
consummating the transactions contemplated by the Transaction Documents.

         3.9 Brokerage.  There is no claim for brokerage  commissions,  finders'
fees or similar compensation in connection with the transactions contemplated by
the  Transaction  Documents  which  is  binding  upon  Base  Ten  or  any of its
subsidiaries.

         3.10  Disclosure.  Neither this Article 3 nor any  certificate or other
item  delivered  to Sellers by or on behalf of  Purchasers  with  respect to the
transactions  contemplated  by the  Transaction  Documents  contains  any untrue
statement of a material fact or omits a material fact which is necessary to make
any statement contained herein or therein not misleading.


                                    ARTICLE 4

                    REPRESENTATIONS AND WARRANTIES OF SELLERS

         As a material  inducement to  Purchasers to enter into this  Agreement,
Sellers, jointly and severally, hereby represent and warrant to Purchasers that:

         4.1      Organization and Power; The Shares; Corporate Documents.

                  (a) ATG is a corporation duly organized,  validly existing and
in  good  standing  under  the  laws of the  State  of New  Jersey.  ATG is duly
qualified to do business in each jurisdiction in which its ownership of property
or conduct of  business  requires  it to so qualify.  Schedule  4.1(a)  attached
hereto lists every jurisdiction where ATG is duly qualified to do business.  ATG
has the requisite  corporate  power necessary to own and operate its properties,
carry on the  Business  and enter into,  deliver and carry out the  transactions
contemplated  by the  Transaction  Documents.  Almedica  is a  corporation  duly
organized,  validly existing and in good standing under the laws of the State of
Delaware.  Almedica is duly  qualified  to do business in each  jurisdiction  in
which its  ownership  of  property  or conduct  of  business  requires  it to so
qualify.  Almedica has the requisite  corporate  power  necessary to enter into,
deliver  and  carry  out  the  transactions   contemplated  by  the  Transaction
Documents.

                  (b) The  authorized  capital  stock of ATG consists  solely of
2,500 shares of Common  Stock,  without par value,  of which only the ATG Shares
are issued and outstanding. The ATG Shares are duly authorized,  validly issued,
outstanding,  fully  paid  and  nonassessable.  Almedica  owns  the ATG  Shares,
beneficially  and  of  record,  free  and  clear  of  all  Liens.  There  are no
outstanding  or authorized  options,  warrants,  purchase  rights,  subscription
rights,  conversion  rights,  exchange  rights or other contracts or commitments
that could require ATG to issue,  sell or otherwise cause to become  outstanding
any of its capital stock or equity  interests or other  instruments  convertible
into such interests.  There are no outstanding or authorized stock appreciation,
phantom  stock,  profit  participation  or similar  rights  with  respect to the
capital stock of ATG. There are no voting trusts, proxies or other agreements or
understandings  with respect to the voting of the capital stock of ATG.  Neither
Almedica  nor ATG nor any of their  respective  Affiliates  has entered into any
agreement, or is bound by any obligation of any kind whatsoever,  to transfer or
dispose of the ATG  Shares,  the  Business  of ATG (or any  substantial  portion
thereof) to any Person  other than Base Ten,  and  neither has entered  into any
agreement,  nor  are  either  of  them  bound  by any  obligation  of  any  kind
whatsoever, to issue any capital stock of ATG to any Person. Except as otherwise
set forth on the attached Schedule 4.1(b), since January 1, 1999 (i) ATG has not
declared or made any payment of any dividend or other distribution in respect of
its  capital  stock,  and (ii)  there  has not been any  split,  combination  or
reclassification or any shares of the capital stock of ATG.

                  (c) Schedule  4.1(c)  attached  hereto lists the directors and
officers of ATG and  includes  correct and  complete  copies of the  articles of
incorporation and bylaws of ATG,  including all amendments  thereto.  The minute
books and stock  transfer  ledgers of ATG made  available  to Base Ten contain a
true and complete  record of all action taken at all meetings and by all written
consents in lieu of meetings of the stockholders, the board of directors and the
committees  of the board of directors  and all transfers in the capital stock of
ATG.

         4.2      Authorization; Binding Effect; No Breach.

                  (a)  ATG's   execution,   delivery  and  performance  of  each
Transaction  Document  to which it is a party has been duly  authorized  by ATG.
Each  Transaction  Document  to which  ATG is a party  constitutes  a valid  and
binding  obligation of ATG which is enforceable  against ATG in accordance  with
its terms.  Except as set forth on the attached  Schedule  4.2,  the  execution,
delivery and performance of the Transaction Documents to which ATG is a party do
not and  will  not (i)  conflict  with  or  result  in a  breach  of the  terms,
conditions or provisions of, (ii)  constitute a default  under,  (iii) result in
the creation of any Lien upon any of the ATG Shares or any of the Assets  under,
(iv) give any third  party the right to  modify,  terminate  or  accelerate  any
liability  or  obligation  of ATG under,  (v) result in a violation  of, or (vi)
require any authorization,  consent,  approval,  exemption or other action by or
declaration  or notice to any  Government  Entity  pursuant  to, the  charter or
bylaws  of ATG or any  agreement,  instrument  or other  document,  or any Legal
Requirement,  to  which  ATG,  any of the ATG  Shares  or any of the  Assets  is
subject.  Without limiting the generality of the foregoing,  neither ATG nor any
of its Affiliates has entered into any agreement,  or is bound by any obligation
of any kind  whatsoever,  directly or indirectly,  to transfer or dispose of the
ATG  Shares  or,  whether  by sale  of  stock  or  assets,  assignment,  merger,
consolidation  or  otherwise,  the  Business  or the Assets (or any  substantial
portion  thereof) to any Person  other than Base Ten, and neither ATG nor any of
its Affiliates  has entered into any agreement,  nor is any such Person bound by
any obligation of any kind whatsoever,  to issue any capital stock of ATG to any
Person.

                  (b)  Almedica's  execution,  delivery and  performance of each
Transaction  Document  to  which  it is a party  has  been  duly  authorized  by
Almedica.  Each Transaction  Document to which Almedica is a party constitutes a
valid and binding  obligation of Almedica which is enforceable  against Almedica
in accordance with its terms.  Except as set forth on the attached Schedule 4.2,
the execution,  delivery and performance of the  Transaction  Documents to which
Almedica is a party do not and will not (i) conflict  with or result in a breach
of the terms,  conditions or  provisions  of, (ii)  constitute a default  under,
(iii)  result in the  creation  of any Lien upon any of the ATG Shares or any of
the Assets  under,  (iv) give any third party the right to modify,  terminate or
accelerate  any  liability  or  obligation  of Almedica  under,  (v) result in a
violation of, or (vi) require any authorization, consent, approval, exemption or
other action by or declaration or notice to any Government  Entity  pursuant to,
the  charter  or  bylaws  of  Almedica  or any  agreement,  instrument  or other
document,  or any Legal Requirement,  to which Almedica or any of the ATG Shares
or any of  the  Assets  is  subject.  Without  limiting  the  generality  of the
foregoing,  neither  Almedica  nor any of its  Affiliates  has entered  into any
agreement,  or is bound by any  obligation of any kind  whatsoever,  directly or
indirectly,  to transfer or dispose of the ATG  Shares,  or,  whether by sale of
stock or assets, assignment, merger, consolidation or otherwise, the Business or
the Assets (or any  substantial  portion  thereof) to any Person other than Base
Ten,  and  neither  Almedica  nor any of its  Affiliates  has  entered  into any
agreement,  nor  is  any  such  Person  bound  by any  obligation  of  any  kind
whatsoever, to issue any capital stock of ATG to any Person.

         4.3 Subsidiaries;  Investments.  ATG does not own or hold any rights to
acquire any capital stock or any other  security,  interest or Investment in any
other Person other than investments  which constitute cash or cash  equivalents.
ATG does not have, and has never had, a Subsidiary.

         4.4 Financial Statements and Related Matters.

                  (a)  Financial  Statements.  Attached  to  this  Agreement  as
Schedule 4.4 are:  (i) the audited  balance  sheets of ATG as of 1996,  1997 and
1998,  and the  audited  related  statements  of income  and cash  flows for the
respective  12-month  periods then ended (the "Audited  Financial  Statements"),
(ii) the unaudited  balance sheet of ATG as of May 31, 1999 (the "Latest Balance
Sheet") and the related  unaudited  statements  of income and cash flows for the
nine-month period then ended (collectively, the "Financial Statements").  Except
as set forth on the attached  Schedule  4.4,  each of the  Financial  Statements
(including  in all cases  the  notes  thereto,  if any)  presents  fairly in all
material  respects  the  financial  condition  of ATG as of the  dates  of  such
statements  and the results of  operation  for such  periods,  is  accurate  and
complete,  is consistent with the books and records of ATG (which,  in turn, are
accurate and complete) and has been prepared in accordance  with GAAP applied on
a  consistent  basis  throughout  the periods  covered  thereby  except as noted
therein (subject,  in the case of the Latest Balance Sheet and related unaudited
statements  of  income  and  cash  flows,  to the  absence  of notes  and  audit
adjustments).

                  (b) Receivables.  The notes and accounts  receivable of ATG on
the Closing Date represent actual transactions,  will be valid receivables, will
be  current  and  collectible,  will not be subject  to valid  counterclaims  or
setoffs and will be collected in  accordance  with their terms at the  aggregate
amount  recorded on ATG's books and records as of the Closing,  net of an amount
of allowances for doubtful  accounts set forth on the Latest  Balance Sheet,  as
adjusted  for the passage of time through the Closing  Date in  accordance  with
GAAP.

                  (c)  Inventory.  Except as set forth on the attached  Schedule
4.4, the inventory of ATG of the date of the Latest  Balance  Sheet,  net of the
reserves  applicable to such inventory set forth on the Latest Balance Sheet, as
adjusted  for the passage of time through the Closing  Date in  accordance  with
GAAP,  consists  of a quantity  and  quality  which is usable and salable in the
ordinary course of business,  and the items of such inventory are not defective,
slow-moving,  obsolete  or  damaged  and are  merchantable  and  fit  for  their
particular use.

                  (d)  Reserves.  Except as set forth on the  attached  Schedule
4.4, the allowance for possible  other  reserves set forth on the Latest Balance
Sheet was  adequate  at the time to cover all  known or  reasonably  anticipated
contingencies.

         4.5  Absence  of  Undisclosed  Liabilities.  Except as set forth on the
attached  Schedule  4.5, as of the Closing Date ATG does not have any  liability
(whether accrued, absolute,  contingent,  unliquidated or otherwise,  whether or
not known to  Sellers,  whether  due or to become due,  and  regardless  of when
asserted)  other than: (a) the  liabilities  set forth on the face of the Latest
Balance Sheet, (b) current  liabilities  which have arisen after the date of the
Latest Balance  Sheet,  in the ordinary  course of business and consistent  with
ATG's past practice,  as applicable (none of which is a liability resulting from
breach of contract,  breach of warranty, tort,  infringement,  violation of law,
claim or lawsuit),  all of which have been  disclosed in writing to  Purchasers,
and (c) other liabilities and obligations  expressly disclosed and quantified in
the other Schedules to this Agreement.

         4.6 Assets.  Except as set forth on the attached Schedule 4.6:

                  (a) the Assets, together with the Proprietary Rights and other
assets  reflected  in the Books and  Records,  constitute  all of the assets and
rights  which are used or useful in the  Business  as  currently  conducted  and
presently proposed to be conducted;

                  (b) ATG has good and marketable title to, or a valid leasehold
interest in or other rights to use (which  other rights to use are  described on
the  attached  Schedule  4.6),  all  properties  and  assets  used  by it in the
Business, located on its premises, shown on the Latest Balance Sheet or acquired
by ATG since the date of the  Latest  Balance  Sheet,  in the each case free and
clear of all Liens,  other than Permitted  Liens,  and other than (i) properties
and assets  disposed of in the ordinary  course of business and consistent  with
ATG's past  practice by ATG since the date of the Latest  Balance  Sheet  (which
disposals do not exceed $25,000 in the  aggregate)  and (ii) Liens  disclosed on
the Latest Balance Sheet (including any notes thereto);

                  (c) ATG's  equipment  and other  tangible  assets  are in good
operating  condition  (subject  to normal  wear and tear) and fit for use in the
ordinary course of business of ATG and consistent with its past practice; and

                  (d) All programming  and development of the Software  included
in the  Proprietary  Rights  was  performed  by  persons  who,  at the time they
performed the work,  were employees of ATG, or engaged by ATG, under  agreements
by which ATG was assigned all ownership in the work,  or was performed  pursuant
to a license from a third-party, which license was validly in effect at the time
the work was performed and pursuant to which any work performed did not and will
not revert to the  third-party  licensor.  The attached  Schedule 4.6 contains a
complete and accurate list of all Software  included in the  Proprietary  Rights
that is in commercial  release,  all of which  performs in  accordance  with its
specifications without errors which materially adversely affect its performance.
The Books and Records  contain a true and complete  list of problem  reports and
field problems and resolutions  that have occurred within the past 3 years.  The
Software  included in the Proprietary  Rights shall record,  store,  process and
present  calendar  dates  falling on or after January 1, 2000 in the same manner
and with the same  functionality as such Software records,  restores,  processes
and presents  calendar dates falling on or before  December 31, 1999, and in all
other aspects,  the Software shall not in any way lose  functionality or degrade
in performance as a consequence of such Software  operating at a date later than
December 31, 1999. The Assets and Proprietary  Rights include any  compatibility
information and technical  information,  including without  limitation  software
interfaces and source codes, that is required to (i) perform regular maintenance
of the Software  included in the  Proprietary  Rights and (ii) design  equipment
and/or  software  which  is  functionally  interconnectable  with  the  Software
included  in the  Proprietary  Rights.  The codes and  manuals  included  in the
Software  describe in  reasonable  detail all of the  application  programs  and
operating programs included in the Software.  Except for escrows of source codes
in favor of licensees  disclosed on Schedule 4.10, the source codes are free and
clear of all Liens and are not subject to any escrow agreements or arrangements.

         4.7  Absence  of  Certain  Developments.  Except  as set  forth  on the
attached  Schedule 4.7, since January 1, 1999,  there has been no adverse change
in the financial  condition,  operating  results,  assets,  customer or supplier
relations,  employee  relations or business prospects of ATG and, to the best of
Sellers'  Knowledge,  no  customer  or  vendor  has any plans to  terminate  its
relationship  with  ATG.  Without  limiting  the  generality  of  the  preceding
sentence,  except as expressly contemplated by this Agreement or as set forth on
the attached  Schedule 4.7, since the date of the Latest Balance Sheet,  Sellers
have not:

                  (a)  engaged in any  activity  which has  resulted  in (i) any
acceleration  or delay of the collection of ATG's accounts or notes  receivable,
(ii) any delay in the payment in ATG's accounts payable or (iii) any increase in
ATG's purchases of raw materials, in each case as compared with ATG's custom and
practice in the  conduct of the  Business  immediately  prior to the date of the
Latest Balance Sheet;

                  (b) discharged or satisfied any Lien or paid any obligation or
liability,  other  than  current  liabilities  paid in the  ordinary  course  of
business and consistent with ATG's past practice;

                  (c) mortgaged or pledged any of the ATG Shares or any Asset or
subjected any of the ATG Shares or any Asset to any Lien;

                  (d) sold, assigned, conveyed, transferred,  canceled or waived
any property,  tangible asset,  Proprietary  Right or other  intangible asset or
right of ATG other than in the ordinary  course of business and consistent  with
ATG's past practice;

                  (e) waived any right of ATG other than in the ordinary  course
of business or consistent with ATG's past practice;

                  (f) made commitments for capital expenditures by ATG which, in
the aggregate, would exceed $50,000;

                  (g) made any loan or advance to, or guarantee  for the benefit
of, or any Investment in, any other Person on behalf of ATG;

                  (h)  granted  any bonus or any  increase  in wages,  salary or
other  compensation  to any employee of ATG (other than any increase in wages or
salaries  granted in the ordinary  course of business and consistent  with ATG's
past practice  granted to any employee who is not affiliated with ATG other than
by reason of such Person's employment by ATG);

                  (i)      made any charitable contributions on behalf of ATG;

                  (j) suffered damages, destruction or casualty losses which, in
the  aggregate,  exceed  $50,000  (whether or not covered by  insurance)  to any
Asset;

                  (k) received any indication from any material  supplier of ATG
to the effect that such supplier will stop, or materially  decrease the rate of,
supplying  materials,  products or services to ATG (whether or not the Merger is
consummated),  or received any indication  from any material  customer of ATG to
the effect that such customer  will stop,  or  materially  decrease the rate of,
buying  materials,  products or services  from ATG (whether or not the Merger is
consummated);

                  (l) entered  into any  transaction  other than in the ordinary
course of business and consistent with ATG's past practice,  or entered into any
other material  transaction,  whether or not in the ordinary course of business,
which may adversely affect ATG;

                  (m)  declared,  set aside,  or paid any  dividend  or made any
distribution  with  respect  to ATG's  capital  stock  or  equity  interests  or
redeemed,  purchased, or otherwise acquired any of ATG's capital stock or equity
interests;

                  (n) adopted or amended any  employee  benefit or welfare  plan
relating to the Employees; or

                  (o)  received  any  indication  from any key  employee  to the
effect that such key employee will terminate employment with ATG; or

                  (p) agreed to do any act  described  in any of clauses  4.7(a)
through (o).

         4.8 Tax Matters.  All  references to ATG in this Section 4.8 refer both
to ATG and, to the extent that Almedica as the parent  corporation  of ATG is or
may be responsible  for the Tax  liabilities of ATG, to Almedica.  Except as set
forth in the attached Schedule 4.8:

                  (a) ATG has filed all Tax Returns and other  reports  which it
was  required  to file and each such  return or other  report  was  correct  and
complete  in all  respects,  and ATG has  paid  all  Taxes  due and  owing by it
(whether or not shown on any Tax Return or other  report) and has  withheld  and
paid over all Taxes which it is obligated to withhold from amounts paid or owing
to any employee, independent contractor, stockholder, partner, creditor or other
third party;

                  (b) no Tax audits are pending or being  conducted with respect
to ATG;

                  (c) there are no Liens  other than  Permitted  Liens on any of
the ATG Shares or any of the Assets  that arose in  connection  with any failure
(or alleged failure) to pay any Tax;

                  (d) no  information  related to Tax matters has been requested
by any Taxing authority and ATG has not received notice  indicating an intent to
open an audit or other review from any Taxing authority;

                  (e) there are no unresolved  disputes or claims concerning the
Tax liability of ATG;

                  (f) no claim has ever been made by any  jurisdiction  in which
ATG does not file Tax Returns to the effect that ATG is or may be subject to any
Tax imposed by that jurisdiction;

                  (g) ATG is not a party to any agreement that could obligate it
to make any payments that would not be deductible pursuant to Code Section 280G,
and the completion of the transactions  contemplated by this Agreement would not
obligate ATG to make any payments that would not be deductible  pursuant to Code
Section 280G;

                  (h) ATG has not  made an  election  pursuant  to Code  Section
341(f);

                  (i) ATG has not waived any statute of  limitations  in respect
of Taxes or agreed to an extension of time with respect to any Tax assessment or
deficiency; and

                  (j)  ATG is not a  party  to any  Tax  sharing  or  allocation
agreement,  and ATG has no liability  for the Taxes of any person under  Section
1.1502-6 of the Treasury  Regulations (or any similar provision of state,  local
or foreign law), as a transferee or successor, by contract, or otherwise.

         4.9      Contracts and Commitments.

                  (a)  Contracts.  Other than this  Agreement and the agreements
described  on the  attached  Schedule  4.9,  neither ATG nor, to the extent that
Almedica as the parent corporation of ATG obligates ATG, Almedica, is a party to
any written or oral:

                          (i) pension,  profit sharing,  stock option,  employee
stock  purchase or other plan or  arrangement  providing  for  deferred or other
compensation to employees or any other employee  benefit,  welfare or stock plan
or  arrangement  which is not  described on the attached  Schedule  4.15, or any
contract with any labor union, or any severance agreement;

                          (ii)  contract for the  employment or engagement as an
independent  contractor of any Person on a full-time,  part-time,  consulting or
other basis;

                          (iii)  contract  pursuant to which ATG has advanced or
loaned funds, or agreed to advance or loan funds, to any other Person;

                          (iv)   contract   or   indenture   relating   to   any
Indebtedness or the mortgaging,  pledging or otherwise  placing a Lien on any of
the ATG Shares or any of the Assets;

                          (v)  contract  pursuant to which ATG is the lessee of,
or holds or operates, any real or personal property owned by any other Person;

                          (vi) contract  pursuant to which ATG is the lessor of,
or permits  any third party to hold or  operate,  any real or personal  property
owned by ATG or of which ATG is a lessee;

                          (vii) assignment,  license,  indemnification  or other
contract with respect to any  intangible  property  (including  any  Proprietary
Right) which is material to the  Business  and is not  described on the attached
Schedule 4.10;

                          (viii)  contract or agreement with respect to services
rendered  or goods sold or leased to or from  others,  other  than any  customer
purchase  order  accepted in the ordinary  course of business and in  accordance
with ATG's past practice;

                          (ix) contract  prohibiting ATG from freely engaging in
any business anywhere in the world;

                          (x)    independent     sales     representative     or
distributorship agreement with respect to the Business; or

                          (xi) executory  contract  (other than one described in
Sections  4.9(a)(i)  through  4.9(a)(x))  which is material to ATG or involves a
consideration in excess of $25,000.

                  (b)  Enforceability.  Each  item  described  on  the  attached
Schedule  4.9  (the  "Contracts")  is a  valid  and  binding  agreement  of  ATG
enforceable  by the  Sellers  in  accordance  with  its  terms,  except  as such
enforceability  against  the  other  parties  thereto  may  be  limited  by  (i)
applicable insolvency, bankruptcy,  reorganization,  moratorium or other similar
laws  affecting  creditors'  rights  generally  and  (ii)  applicable  equitable
principles (whether considered in a proceeding at law or in equity).

                  (c)  Compliance.  ATG has performed  all material  obligations
required to be performed by it under each Contract, and, to the best of Sellers'
Knowledge,  ATG is not in any material  respect in default under or in breach of
(nor is it in receipt of any claim of any such  default  under or breach of) any
such obligation.  Except as set forth on the attached Schedule 4.9, no event has
occurred  which with the passage of time or the giving of notice (or both) would
result  in a  material  default,  breach  or event of  noncompliance  under  any
obligation of ATG pursuant to any Contract.  ATG has no present  expectation  or
intention  of  not  fully  performing  any  obligation  of ATG  pursuant  to any
Contract,  and Sellers have no Knowledge of any breach or anticipated  breach by
any other party to any Contract.

                  (d) Leases.  With respect to each Contract which is a lease of
personal property,  ATG holds a valid and existing leasehold interest under such
lease for the term thereof.

                  (e)  Affiliated  Transactions.  Except  as  set  forth  on the
attached  Schedule  4.9(e),  no officer,  director,  stockholder or Affiliate of
Sellers (and no individual  related by blood or marriage to any such Person, and
no entity in which any such Person or individual  owns any beneficial  interest)
is a party to any agreement, contract, commitment or transaction with ATG (other
than this Agreement) or has any material  interest in any material property used
by ATG.

                  (f) Copies. Purchasers' legal counsel has been supplied with a
true and correct copy of each written Contract, each as currently in effect.

         4.10  Proprietary  Rights.  All  references to ATG in this Section 4.10
refer both to ATG and, to the extent that Almedica as the parent  corporation of
ATG owns or licenses Proprietary Rights used in connection with the Business, to
Almedica.

                  (a) Schedule.  The attached  Schedule 4.10 contains a complete
and accurate list of all material Proprietary Rights,  including but not limited
to (i) all  patented or  registered  Proprietary  Rights owned by ATG or used in
connection  with  the  Business,   (ii)  all  pending  patent  applications  and
applications for registrations of other Proprietary Rights filed by or on behalf
of ATG or used in connection with the Business, (iii) all trade names, corporate
names and  unregistered  trade names and  service  marks owned by ATG or used in
connection with the Business, and (iv) all unregistered  copyrights and computer
software  which are  material to the  financial  condition,  operating  results,
assets, customer or supplier relations, employee relations or business prospects
of ATG. The attached Schedule 4.10 also contains a complete and accurate list of
all material  licenses and other rights  granted by ATG to any third party,  all
material  licenses  and other  rights  granted by any third  party to ATG,  with
respect to any Proprietary  Rights,  a general  description of all agreements or
arrangements  of escrows of source codes in favor of licensees  together  with a
description of the location of copies of all such  agreements.  The  Proprietary
Rights comprise all intellectual property rights which are used or useful in the
operation of the Business.

                  (b)  Ownership;  Claims.  Except as set forth on the  attached
Schedule  4.10,  ATG owns and possesses all right,  title and interest in and to
(or has the  right to use  pursuant  to a valid  and  enforceable  license)  all
Proprietary  Rights described on the attached  Schedule 4.10 which are necessary
or desirable for the operation of ATG's  business as presently  conducted and as
presently  proposed to be conducted,  and ATG has taken all necessary actions to
maintain and protect its interest in all the Proprietary  Rights. To the best of
Sellers'  Knowledge,  the owners of the Proprietary  Rights licensed to ATG have
taken all necessary actions to maintain and protect the Proprietary Rights which
are subject to such licenses. Except as indicated on the attached Schedule 4.10:

                          (i)  ATG  owns  or has  the  right  to use  all of the
Proprietary  Rights described on such Schedule and each other  Proprietary Right
which is material to the conduct of the Business (in each case free and clear of
all Liens and free of all claims to the use by others),

                          (ii)  there  have  been no  claims  made  against  ATG
asserting the invalidity,  misuse or unenforceability of any of such Proprietary
Rights, and there are no grounds known to Sellers for any such claim,

                          (iii) ATG has not  received  any  notice of (nor is it
aware  of any  facts  which  indicate  a  likelihood  of)  any  infringement  or
misappropriation  by, or conflict  with,  any Person with respect to any of such
Proprietary Rights (including any demand or request that ATG license rights from
any Person),

                          (iv) to the best of Sellers' Knowledge, the conduct of
the Business  has not  infringed  or  misappropriated,  and does not infringe or
misappropriate  in any  material  respect,  any  proprietary  right of any other
Person,  nor would  Purchasers'  conduct of the Business as presently  conducted
infringe or  misappropriate in any material respect any proprietary right of any
other Person,

                          (v)  to  the   best  of   Sellers'   Knowledge,   such
Proprietary  Rights have not been infringed or  misappropriated  in any material
respect by any other Person, and

                          (vi) the consummation of the transactions contemplated
by this Agreement will have no adverse effect on any such Proprietary Right.

         4.11 Certain  Litigation.  Except as set forth on the attached Schedule
4.11,  there is no  action,  suit,  proceeding,  order,  investigation  or claim
pending (or, to the best of Sellers' Knowledge, threatened) against or affecting
ATG or the Business (or to the best of Sellers' Knowledge, pending or threatened
against or  affecting  any officer,  director or employee of ATG),  at law or in
equity, or before or by any Government Entity, including (a) with respect to the
transactions  contemplated by the Transaction  Documents,  or (b) concerning the
design,  manufacture,  rendering  or sale by ATG of any  product  or  service or
otherwise  concerning  the  conduct  of  the  Business,  and,  in  the  case  of
subsections  (a) and (b), to the best of Sellers'  Knowledge,  there is no basis
for any of the foregoing.

         4.12  Brokerage.  Except at set forth on the  attached  Schedule  4.12,
there  is  no  claim  for  brokerage  commissions,   finders'  fees  or  similar
compensation in connection with the transactions contemplated by the Transaction
Documents which is binding upon Sellers or to which ATG or any of the ATG Shares
or any of the Assets is subject.

         4.13  Insurance.  The attached  Schedule 4.13 contains a description of
each insurance policy maintained by Sellers with respect to ATG, its properties,
assets or  business,  and each such policy is in full force and effect.  Sellers
are not in default of any obligation  pursuant to any insurance policy described
on Schedule 4.13.

         4.14  Employees.

                  (a) Continued  Employment.  To the best of Sellers' Knowledge,
no  executive  or key  employee of ATG or any group of  employees of ATG has any
plans to terminate employment with ATG.

                  (b)  Compliance  and  Restrictions.  ATG has complied with all
laws  relating to the  employment  of labor,  including  provisions of such laws
relating to wages,  hours,  equal  opportunity,  collective  bargaining  and the
payment  of social  security  and other  taxes,  and ATG has no  material  labor
relations problem  (including any union organization  activities,  threatened or
actual strikes or work stoppages or material grievances). Except as set forth on
the attached Schedule 4.14,  neither ATG nor any employees of ATG are subject to
any  noncompete,  nondisclosure,   confidentiality,  employment,  consulting  or
similar  agreement  relating to,  affecting,  or in conflict  with, the Business
activities as presently conducted or as proposed to be conducted.

         4.15 ERISA.  All  references  to ATG in this Section 4.15 refer both to
ATG and, to the extent that Almedica as the parent  corporation of ATG is or may
be  responsible  for the  employment  matters of ATG  identified in this Section
4.15,  to Almedica.  Except as set forth on the  attached  Schedule  4.15,  with
respect to all current  employees  (including  those on lay-off,  disability  or
leave  of  absence),  former  employees,  and  retired  employees  of  ATG  (the
"Employees"):

                  (a) ATG neither  maintains nor contributes to any (i) employee
welfare benefit plans (as defined in Section 3(1) of ERISA)  ("Employee  Welfare
Plans"),  or (ii) any plan,  policy or arrangement  which provides  nonqualified
deferred  compensation,  bonus or retirement  benefits,  severance or "change of
control"  (as set forth in Code  Section  280G)  benefits,  or life,  disability
accident,  vacation,  tuition  reimbursement  or other material  fringe benefits
("Other Plans");

                  (b) ATG does not maintain,  contribute  to, or  participate in
any defined benefit plan or defined contribution plan which are employee pension
benefit plans (as defined in Section 3(2) of ERISA) ("Employee Pension Plans");

                  (c)  ATG  does  not   contribute  to  or  participate  in  any
multiemployer  plan (as  defined  in Section  3(37) of ERISA) (a  "Multiemployer
Plan");

                  (d) ATG does not maintain or have any obligation to contribute
to or provide any post-retirement health, accident or life insurance benefits to
any Employee,  other than limited medical benefits required to be provided under
Code Section 4980B;

                  (e) all Plans (and all related trusts and insurance contracts)
comply in form and in  operation in all material  respects  with the  applicable
requirements of ERISA and the Code;

                  (f) all required reports and descriptions  (including all Form
5500  Annual  Reports,   Summary  Annual  Reports,   PBGC-1s  and  Summary  Plan
Descriptions)  with  respect  to all Plans  have been  properly  filed  with the
appropriate  Government  Entity  or  distributed  to  participants,  and ATG has
complied substantially with the requirements of Code Section 4980B;

                  (g) with respect to each Plan, all contributions,  premiums or
payments  which are due on or  before  the  Closing  Date have been paid to such
Plan; and

                  (h) ATG has not incurred any liability to the Pension  Benefit
Guaranty  Corporation (the "PBGC"),  the United States Internal Revenue Service,
any multiemployer plan or otherwise with respect to any employee pension benefit
plan  or  with  respect  to any  employee  pension  benefit  plan  currently  or
previously  maintained  by  members of the  controlled  group of  companies  (as
defined  in  Sections  414(b)  and  (c) of the  Code)  that  includes  ATG  (the
"Controlled Group") that has not been satisfied in full, and no condition exists
that  presents a material risk to ATG or any member of the  Controlled  Group of
incurring  such a liability  (other than  liability  for  premiums due the PBGC)
which could reasonably be expected to have any adverse effect on Base Ten or any
of the ATG Shares or any of the Assets after the Closing.

         4.16     Real Estate.

                  (a) Owned Properties.  ATG does not own any real property.

                  (b) Leased Property.  The attached  Schedule 4.16(b) lists and
describes  briefly all real  property  leased or  subleased to ATG and all other
real  property  which is used in the  Business and not owned by ATG (the "Leased
Real  Property").  ATG has delivered to  Purchasers'  legal counsel  correct and
complete  copies  of  the  leases  and  subleases  listed  on  Schedule  4.16(b)
(collectively,  the "Leases"). With respect to the Leased Real Property and each
of the Leases, except as set forth on the attached Schedule 4.16(b):

                          (i) such Lease is legal, valid, binding,  enforceable,
and in full force and effect;

                          (ii)  such  Lease  is  fully  assignable  to Base  Ten
without the need for any  consents  or  authorizations  and will  continue to be
legal, valid,  binding,  enforceable,  and in full force and effect on identical
terms following the Merger;

                          (iii) no party to such Lease is in material  breach or
default,  and no event has occurred which,  with notice or lapse of time,  would
constitute  such a breach or default  or permit  termination,  modification,  or
acceleration of such Lease;

                          (iv)  no  party  to  such  Lease  has  repudiated  any
provision thereof;

                          (v)  there  are  no  disputes,  oral  agreements,   or
forbearance programs in effect as to such Lease;

                          (vi) to the best of Sellers' Knowledge, in the case of
each Lease which is a sublease,  the representations and warranties set forth in
clauses  4.16(b)  (i)  through  (v) are true and  correct  with  respect  to the
underlying lease;

                          (vii)  ATG has not  assigned,  transferred,  conveyed,
mortgaged,  deeded in trust,  or  encumbered  any  interest in the  leasehold or
subleasehold created pursuant to such Lease;

                          (viii)  none of the  Leases has been  modified  in any
respect,  except to the extent that such  modifications  are in writing and have
been delivered or made available to Purchasers;

                          (ix) to the best of Sellers' Knowledge, all buildings,
improvements  and other  structures  located upon the Leased Real  Property have
received all approvals or Governmental Entities, including licenses and permits,
required in connection with the operation of the Business  thereon and have been
operated and maintained in accordance with all applicable Legal Requirements and
the terms and conditions of the Leases; and

                          (x) all buildings,  structures and other  improvements
located upon the Leased Real Property,  including all components thereof, are in
good  operating  condition  subject  to the  provision  of usual  and  customary
maintenance  in the  ordinary  course of  business  with  respect to  buildings,
structures and  improvements of like age and  construction  and all water,  gas,
electrical, steam, compressed air, telecommunication,  sanitary and storm sewage
and other  utility  lines and  systems  serving  the Leased  Real  Property  are
sufficient to enable the continued  operation of the Leased Real Property in the
manner currently being used in connection with the operation of the Business.

         4.17     Compliance with Laws.

                  (a)  Generally.  Except as set forth on the attached  Schedule
4.17(a), ATG has not violated any Legal Requirement in any material respect, and
Sellers have not received notice alleging any such violation.

                  (b)  Required  Permits.  ATG  in  all  material  respects  has
complied  with (and is in  compliance  with)  all  permits,  licenses  and other
authorizations required for the occupation of ATG's facilities and the operation
of the Business. The items described on the attached Schedule 4.17(b) constitute
all  of the  permits,  filings,  notices,  licenses,  consents,  authorizations,
accreditation,  waivers,  approvals  and the like of, to or with any  Government
Entity  which are  required  for the  consummation  of the Merger,  or any other
transaction  contemplated  by the  Transaction  Documents  or the conduct of the
Business  (as  it is  presently  conducted  by  ATG)  in all  material  respects
thereafter.

                  (c)  Environmental  and Safety Matters.  Without  limiting the
generality of Sections 4.17(a) and (b):

                          (i) ATG has  complied  and is in  compliance  with all
Environmental and Safety Requirements in all material respects.

                          (ii) Without limiting the generality of the foregoing,
ATG has obtained and complied with,  and is in compliance  with, in all material
respects all material  permits,  licenses and other  authorizations  that may be
required pursuant to Environmental and Safety Requirements for the occupation of
its  facilities  and the operation of the Business.  A list of all such permits,
licenses and other authorizations is set forth on the attached Schedule 4.17(b).

                          (iii) ATG has not received any written or oral notice,
report  or  other  information   regarding  any  liabilities  (whether  accrued,
absolute, contingent,  unliquidated or otherwise) or investigatory,  remedial or
corrective  obligations,  relating to it or its  facilities  and  arising  under
Environmental and Safety Requirements.

                          (iv)  Except  as set  forth on the  attached  Schedule
4.17(c),  to the best of Sellers'  Knowledge none of the following exists at any
property or facility owned, operated or occupied by ATG:

                              1) underground    storage    tanks   or    surface
                                 impoundments

                              2) asbestos-containing  material  in any  form  or
                                 condition; or

                              3) materials     or      equipment      containing
                                 polychlorinated biphenyls.

                          (v) ATG has not treated, stored, disposed of, arranged
for or  permitted  the  disposal  of,  transported,  handled,  or  Released  any
substance,  including any Hazardous Substance, or owned or operated any facility
or  property,  so as to give  rise to  liabilities  of ATG for  response  costs,
natural  resource  damages or  attorneys'  fees  pursuant  to the  Comprehensive
Environmental  Response,  Compensation  and  Liability  Act of 1980,  as amended
("CERCLA"), or similar state or local Environmental and Safety Requirements.

                          (vi) To the best of Sellers'  Knowledge,  neither this
Agreement nor the  consummation of the Merger will result in any obligations for
site  investigation or cleanup,  or notification to or consent of any Government
Entity or third parties,  pursuant to any so-called  "transaction-triggered"  or
"responsible property transfer" Environmental and Safety Requirements.

                          (vii) ATG has not, either expressly or, to the best of
Sellers'  Knowledge,  by operation of law,  assumed or undertaken any liability,
including any obligation for corrective or remedial action,  of any other Person
relating to any Environmental and Safety Requirements.

                          (viii)  No  Environmental  Lien  has  attached  to any
property now or previously owned, leased or operated by ATG.

                          (ix) Without  limiting the  foregoing,  to the best of
Sellers'  Knowledge,  no facts, events or conditions relating to the Leased Real
Property,  or other past or present facilities,  properties or operations of ATG
will prevent, hinder or limit continued compliance with Environmental and Safety
Requirements, give rise to any investigatory, remedial or corrective obligations
pursuant to  Environmental  and Safety  Requirements,  or give rise to any other
liabilities (whether accrued, absolute,  contingent,  unliquidated or otherwise)
pursuant to  Environmental  and Safety  Requirements,  including any relating to
onsite or offsite  Releases  or  threatened  Releases of  Hazardous  Substances,
personal injury, property damage or natural resource damage.

                          (x) ATG's Standard Industry Code (or "SIC") is 8099.

         4.18 Product  Warranty.  Except as set forth on the  attached  Schedule
4.18, all products manufactured, serviced, distributed, sold or delivered by ATG
have been manufactured, serviced, distributed, sold and/or delivered in material
conformity  with all  applicable  contractual  commitments  and all  express and
implied warranties.  To the best of Sellers' Knowledge, no material liability of
ATG exists for replacement or other damages in connection with any such product.

         4.19 Powers of Attorney.  There are no  outstanding  powers of attorney
executed on behalf of ATG.

         4.20.  Bank Accounts.  Schedule 4.20 identifies the names and locations
of all banks,  depositories  and other  financial  institutions in which ATG, or
Almedica or any other  Person on behalf of ATG,  has an account or safe  deposit
box and the names of all persons  authorized to draw on such accounts or to have
access to such safe deposit boxes.

         4.21 Purchase for  Investment.  The Base Ten Shares will be acquired by
Almedica for its own account for the purpose of investment,  it being understood
that the right to dispose of such Base Ten Shares  shall be entirely  within the
discretion  of Almedica,  except with respect to the Escrow Amount in accordance
with the provisions of this Agreement.  Almedica will refrain from  transferring
or otherwise  disposing of any of the Base Ten Shares,  or any interest therein,
in such  manner  as to cause  Base Ten to be in  violation  of the  registration
requirements of the Securities Act, or applicable  state  securities or blue sky
laws.  Almedica  acknowledges that the Base Ten Shares have not been registered,
and in connection with the transactions  contemplated by this Agreement will not
be registered,  under the Securities Act and, therefore, cannot be resold unless
they are  registered  under  the  Securities  Act or unless  an  exemption  from
registration is available.

         4.22 Disclosure.  Neither this Article 4 nor any schedule,  attachment,
written  statement,  certificate or similar item supplied to Purchasers by or on
behalf  of  Sellers  with  respect  to  the  transactions  contemplated  by  the
Transaction  Documents contains any untrue statement of a material fact or omits
a material fact necessary to make each statement contained herein or therein not
misleading.  Sellers have not deliberately withheld from Purchasers  information
of which any  director  or officer of Sellers  is  specifically  aware  which is
likely in Sellers' good faith  judgment to cause a material  adverse effect upon
the assets of ATG or its ability to operate its business.  No current  customer,
supplier  or  employee  of ATG has  stated  that it  intends  to  terminate  its
relationship with ATG whether in connection with the Merger or otherwise.


                                    ARTICLE 5

                                ACCESS TO RECORDS

         To the extent  reasonably  required for any bona fide business purpose,
each  Party  will  allow,  and  will use its  reasonable  efforts  to cause  its
Affiliates  to  allow,   the  other  Party  (and  the  other   Party's   agents,
representatives  and  Affiliates)  access  to all  business  records  and  files
concerning  ATG which  relate to the period  prior to the Closing  Date and will
permit such Persons to make copies of the same. Such access will be granted upon
reasonable advance notice, during normal business hours, and in such a manner so
as not to interfere  unreasonably  with the  operations of the Person  affording
such access.  Without limiting the generality of the foregoing,  if either Party
or any of its Affiliates actively is contesting or defending against any charge,
complaint, action, suit, proceeding, hearing, investigation, claim, or demand in
connection with (a) any transaction  contemplated by the Transaction  Documents,
or (b) any fact, situation, circumstance, status, condition, activity, practice,
plan, occurrence,  event, incident, action, failure to act, or transaction on or
prior to the Closing  relating to ATG, then the other Party will cooperate,  and
use its  reasonable  efforts  to cause its  Affiliates  to  cooperate,  with the
contesting or defending Person and its counsel in such contest or defense,  make
available  such other  Party's and its  Affiliates'  personnel  and provide such
testimony  and  access to books  and  records  as are  reasonably  requested  in
connection  with such  contest or defense,  all at the  contesting  or defending
Person's  expense  (unless the  contesting  or  defending  Person is entitled to
indemnification therefor pursuant to Section 6.2 or 6.3).


                                    ARTICLE 6

                          SURVIVAL AND INDEMNIFICATION

         6.1  Survival of Representations and Warranties.

                  (a)  Survival   Term.  All   representations   and  warranties
contained  herein or made in writing by any Party in connection  herewith  shall
survive the execution and delivery of this Agreement and the consummation of the
transactions  contemplated  hereby  (regardless of any investigation made by any
Party or on its behalf) and will continue in full force and effect for:

                          (i) perpetuity, in the case of the representations and
warranties  in Section  3.3,  the first  sentence  of each of  Sections  3.4(a),
3.4(b), 4.2(a) and 4.2(b), and Section 4.1(b);

                          (ii) the period  prescribed by the applicable  statute
of limitations,  in the case of the  representations  and warranties in Sections
4.8, 4.15 and 4.17(a); and

                          (iii) for a period of two years  following the Closing
Date for all other representations and warranties set forth in Articles 3 and 4.

                  (b) Special Rule for Fraud.  Notwithstanding  anything in this
Section  6.1 to the  contrary,  in the  event  of a  breach  by any  Party  of a
representation  or warranty which breach is intentional,  or constitutes  fraud,
the representation or warranty that has been breached will survive the execution
and  delivery  of  this  Agreement  and  the  consummation  of the  transactions
contemplated hereby (regardless of any investigation made by any Party or on its
behalf) and will  continue in full force and effect for six years  following the
Closing Date.

                  (c)  No  Waiver.   Neither  a  Party's  participation  in  the
consummation  of any transaction  pursuant to any  Transaction  Document nor any
waiver of any condition to such  participation  (including  any condition that a
representation  or  warranty  of any  other  Party  be true  and  correct)  will
constitute  a  waiver  by such  participating  Party  of any  representation  or
warranty  of  any  Party  or   otherwise   affect  the   survival  of  any  such
representation or warranty.

         6.2  Indemnification Obligations of Almedica.

                  (a) Specific  Indemnifiable  Losses.  In addition to any other
right or remedy  available  to  Purchasers  at law or in equity,  Almedica  will
indemnify Purchasers and their Affiliates,  stockholders,  officers,  directors,
employees,   agents,   representatives  and  permitted  successors  and  assigns
(collectively, the "Base Ten Indemnitees") in respect of, and save and hold each
Base Ten Indemnitee harmless against and pay on behalf of or reimburse each Base
Ten  Indemnitee  as and when  incurred,  any Loss which any Base Ten  Indemnitee
suffers,  sustains  or becomes  subject to as a result of, in  connection  with,
relating or incidental to or by virtue of, without duplication:

                          (i) subject to the survival provisions of Section 6.1,
any  misrepresentation  or breach of any  representation or warranty (other than
intentional  misrepresentations  or breaches of  representations  and warranties
arising out of fraud) by Sellers set forth in this  Agreement  or any  Schedule,
certificate or other  instrument or document  furnished to Purchasers by Sellers
pursuant to any Transaction Document;

                          (ii) any  intentional  misrepresentation  or breach of
any representation or warranty arising out of fraud by Sellers set forth in this
Agreement or any Schedule, certificate or other instrument or document furnished
to Purchasers by Sellers pursuant to any Transaction Document;

                          (iii) any  nonfulfillment or breach of any covenant or
agreement of Sellers set forth in any Transaction Document;

                          (iv) any liability in connection with the consummation
of the  transactions  contemplated  herein to any  prospective  buyer  with whom
Sellers or any of their agents have had discussions regarding the disposition of
ATG; or

                          (v)  any  liabilities  of ATG of any  nature,  whether
accrued, absolute,  contingent or otherwise, existing at Closing and undisclosed
in the Transaction Documents.

                  (b) Limitation of Liability and Source of Indemnification.

                          (i) In no  event,  except  with  respect  to any claim
described  in  Sections  6.2(a)(ii)  and  6.1(b)  of this  Agreement,  shall any
indemnification  be made under Section 6.2 until the aggregate  amount of Losses
with  respect to an  indemnity  obligation  of Almedica  exceeds  $50,000,  then
indemnification  for such obligation  shall be made to the full extent of Losses
in excess of $50,000. In no event, except with respect to any claim described in
Sections 6.2(a)(ii) and 6.1(b) of this Agreement, shall the indemnity obligation
of Almedica under this Agreement exceed, in the aggregate, $3,160,000.

                          (ii)  The  Base  Ten   Indemnitees'   remedy  for  any
indemnification hereunder,  including any claim described in Sections 6.2(a)(ii)
and 6.1(b), may be satisfied as follows:  Almedica's indemnification obligations
shall be  satisfied  first by  recourse  to the Base Ten Shares  comprising  the
Escrow  Amount  (except to the extent  Almedica  pays such amount in cash),  and
then, for any balance,  by payment in cash by Almedica or in Base Ten Shares, if
any, still owned by Almedica. For purposes of this Section, the value of each of
the Base Ten Shares shall be $1.00 per share.

         6.3  Indemnification Obligations of Purchasers.

                  (a) Specific  Indemnifiable Losses.  Purchasers will indemnify
Sellers and their  Affiliates,  stockholders,  officers,  directors,  employees,
agents, representatives and permitted successors and assigns (collectively,  the
"Almedica  Indemnitees")  and hold each of them harmless  against any Loss which
Almedica Indemnitee  suffers,  sustains or becomes subject to as a result of, in
connection with, relating to or by virtue of, without duplication:

                          (i) subject to the survival provisions of Section 6.1,
any  misrepresentation  or breach of any  representation or warranty (other than
intentional  misrepresentations  or breaches of  representations  and warranties
arising  out of  fraud)  by  Purchasers  set  forth  in  this  Agreement  or any
certificate  furnished  to Sellers by  Purchasers  pursuant  to any  Transaction
Document;

                          (ii) any  intentional  misrepresentation  or breach of
any  representation  or warranty arising out of fraud by Purchasers set forth in
this Agreement or any certificate furnished to Sellers by Purchasers pursuant to
any Transaction Document;

                          (iii) any  nonfulfillment or breach of any covenant or
agreement of Purchasers set forth in any Transaction Document; or

                          (iv) the  ownership  and/or the operation of ATG after
the Closing.

                  (b) Limitation of Liability.  In no event, except with respect
to any claim  described  in Sections  6.3(a)(ii)  and 6.1(b) of this  Agreement,
shall any  indemnification  be made under Section 6.2 until the aggregate amount
of Losses with respect to an indemnity obligation of Purchasers exceeds $50,000,
then  indemnification  for such  obligation  shall be made to the full extent of
Losses in excess of  $50,000.  In no event,  except  with  respect  to any claim
described  in  Sections  6.3(a)(ii)  and  6.1(b)  of this  Agreement,  shall the
indemnity   obligation  of  Purchasers  under  this  Agreement  exceed,  in  the
aggregate, $3,160,000.

         6.4  Indemnification Procedures.

                  (a)  Notice  of  Claim.   Any   Person   making  a  claim  for
indemnification  pursuant to Section 6.2 or 6.3 above (an  "Indemnified  Party")
must  give the Party  from whom  indemnification  is  sought  (an  "Indemnifying
Party")  written  notice  of such  claim  (an  "Indemnification  Claim  Notice")
promptly after the Indemnified  Party receives any written notice of any action,
lawsuit,  proceeding,  investigation or other claim (a "Proceeding")  against or
involving the Indemnified  Party by a Government  Entity or other third party or
otherwise discovers the liability, obligation or facts giving rise to such claim
for indemnification;  provided, that the failure to notify or delay in notifying
an Indemnifying Party will not relieve the Indemnifying Party of its obligations
pursuant to Section 6.2 or 6.3,  as  applicable,  except to the extent that such
failure  actually  harms the  Indemnifying  Party.  Such notice  must  contain a
description  of the claim and the  nature and amount of such Loss (to the extent
that the nature and amount of such Loss is known at such time).

                  (b)  Control  of  Defense;  Conditions.  With  respect  to the
defense of any Proceeding  against or involving an Indemnified  Party in which a
Government  Entity or other third party in question seeks only the recovery of a
sum of money for which indemnification is provided in Section 6.2 or 6.3, at its
option an  Indemnifying  Party may appoint as lead  counsel of such  defense any
legal counsel  selected by the  Indemnifying  Party;  provided,  that before the
Indemnifying Party assumes control of such defense it must first:

                          (i) enter into an agreement with the Indemnified Party
(in form and substance  satisfactory to the Indemnified Party) pursuant to which
the Indemnifying  Party agrees to be fully  responsible  (with no reservation of
any  rights  other  than  the  right  to be  subrogated  to  the  rights  of the
Indemnified   Party)   for  all  Losses   relating   to  such   Proceeding   and
unconditionally  guarantees  the payment and  performance  of any  liability  or
obligation  which may arise with respect to such  Proceeding or the facts giving
rise to such claim for indemnification, and

                          (ii) furnish the Indemnified  Party with evidence that
the Indemnifying Party, in the Indemnified Party's sole judgment, is and will be
able to satisfy any such liability.

                  (c)  Control  of  Defense;  Related  Matters.  Notwithstanding
Section 6.4(b):

                          (i)  the   Indemnified   Party  will  be  entitled  to
participate in the defense of such claim and to employ counsel of its choice for
such purpose at its own expense; provided, that the Indemnifying Party will bear
the reasonable fees and expenses of such separate  counsel incurred prior to the
date upon  which the  Indemnifying  Party  effectively  assumes  control of such
defense;

                          (ii) the  Indemnifying  Party will not be  entitled to
assume control of the defense of such claim,  and will pay the  reasonable  fees
and expenses of legal counsel retained by the Indemnified Party, if

                                    (A)   the   Indemnified   Party   reasonably
believes that an adverse  determination  of such Proceeding  could be materially
detrimental to or injure the Indemnified  Party's  reputation or future business
prospects, or

                                    (B) a court of competent  jurisdiction rules
that the  Indemnifying  Party has failed or is failing  to  prosecute  or defend
vigorously such claim; and

                          (iii) the  Indemnifying  Party  must  obtain the prior
written consent of the Indemnified  Party (which the Indemnified  Party will not
unreasonably  withhold)  prior to entering into any  settlement of such claim or
Proceeding or ceasing to defend such claim or Proceeding.


                                    ARTICLE 7

                                 OTHER COVENANTS


         7.1 Transaction Expenses.  Purchasers will be responsible for all costs
and  expenses  incurred  by  Purchasers  in  connection  with  the  negotiation,
preparation and entry into the Transaction Documents and the consummation of the
transactions to be consummated pursuant to the Transaction  Documents.  Almedica
will pay (a) all transfer,  sales,  use and other Taxes imposed by reason of the
transactions  contemplated by this Agreement, (b) all stamp and recording taxes,
fees and expenses,  settlement fees, escrow fees and other miscellaneous closing
fees or costs associated  therewith,  and (c) all costs and expenses incurred by
Sellers  in  connection  with the  negotiation,  preparation  and entry into the
Transaction Documents and the consummation of the transactions to be consummated
pursuant to the Transaction Documents.

         7.2 Further Assurances.  From and after the Closing,  Sellers will, and
will cause their  Affiliates to, execute all documents and take any other action
which it is reasonably  requested to execute or take to further  effectuate  the
transactions contemplated by the Transaction Documents.

         7.3 Announcements.  Sellers will not make any public announcement of or
regarding the  transactions  contemplated  by this  Agreement  without the prior
approval of Purchasers as to the timing and content of such announcement  (which
approval Purchasers may not unreasonably withhold or delay).

         7.4  [Intentionally Omitted]

         7.5 Non-Competition.  In consideration for, and as a condition to, Base
Ten's agreement to enter into this Agreement, Almedica agrees as follows:

                  (a) Scope of Agreement. Almedica agrees that during the period
beginning on the Closing Date and ending on the fifth anniversary of the Closing
Date (the "Non-Competition Period"),  Almedica will not, directly or indirectly,
either for itself or for any other Person, participate in, or permit its name to
be used by, any business or enterprise  (other than the  development by Base Ten
of software  for  Almedica's  account)  identical  to or similar to the Business
which is engaged in by ATG as of the date of this Agreement and which is located
in North America.  Purchasers and their respective  successors shall give prompt
notice  to  Almedica   following  a  determination  by  Purchasers   during  the
Non-Competition  Period to no longer update and support any software application
or product  devised or marketed by ATG (or any successor  controlled by Base Ten
or any of its  successors)  and used by any customer of Almedica with respect to
the  services  provided  by  Almedica  to such  customers,  and,  following  the
provision of such notice,  Purchasers  and Almedica  shall agree to meet and use
all commercially reasonable efforts to establish a course of action with respect
to the provision of services by Almedica to its clients who use or have used and
request such software applications or products.  For purposes of this Agreement,
the  term  "participate"  includes  any  direct  or  indirect  interest  in  any
enterprise, whether as an officer, director, employee, partner, sole proprietor,
agent,   representative,   independent   contractor,   consultant,   franchisor,
franchisee,  creditor, owner or otherwise; provided, that the term "participate"
shall  not  include  ownership  of less  than  two  percent  of the  stock  of a
publicly-held  corporation  whose  stock  is  traded  on a  national  securities
exchange or in the over-the-counter  market.  Almedica agrees that this covenant
is reasonable with respect to its duration, geographical area and scope.

                  (b) Specific  Performance.  The parties hereto agree that Base
Ten  would  suffer  irreparable  harm from a breach  by  Almedica  of any of the
covenants  or  agreements  contained  in this  Section  7.5.  In the event of an
alleged  or  threatened  breach by  Almedica  of any of the  provisions  of this
Section 7.5, Base Ten or its successors or assigns may, in addition to all other
rights  and  remedies  existing  in its favor,  apply to any court of  competent
jurisdiction for specific performance and/or injunctive or other relief in order
to enforce or prevent any  violations of the  provisions  hereof  (including the
extension of the  Non-Competition  Period by a period equal to the length of the
violation of this Section 7.5).  In the event of an alleged  breach or violation
by any  such  Persons  of any  of  the  provisions  of  this  Section  7.5,  the
Non-Competition  Period described above will be tolled until such alleged breach
or  violation  is  resolved.   Almedica  agrees  that  these   restrictions  are
reasonable.

                  (c)  Reasonableness.  If, at the time of enforcement of any of
the provisions of this Section 7.5, a court holds that the  restrictions  stated
therein are  unreasonable  under the  circumstances  then existing,  the Parties
hereto agree that the maximum  period,  scope or  geographical  area  reasonable
under such  circumstances  will be substituted  for the stated period,  scope or
area.

                  (d)  Survival.  Almedica  agrees  that the  covenants  made in
Section  7.5(a)  shall be construed  as an  agreement  independent  of any other
provision of this  Agreement and shall survive any order of a court of competent
jurisdiction terminating any other provision of this Agreement.

         7.6  Board  Representation.  At the  Closing,  Clark  Bullock  will  be
appointed to serve as a director of Base Ten. Base Ten shall include Mr. Bullock
in the slate of directors recommended by the management of Base Ten in the proxy
statement  for the next held  annual  meeting  for the  election  of  directors.
Almedica  shall have the right,  provided  Almedica  continues  to hold Base Ten
Shares constituting at least 10% of the then outstanding Class A Common Stock of
Base Ten, to nominate  one  director  to the Board of  Directors  of Base Ten by
giving written notice to Base Ten of such  nomination  together with the written
consent of such nominee to serve as director not less than 120 days prior to the
date that Base Ten's proxy  statement in connection  with its annual  meeting of
shareholders  for the election of directors is to be mailed to  shareholders  of
record.  Base  Ten  shall  include  such  nominee  in  the  slate  of  directors
recommended  by the  management of Base Ten in the proxy  statement for the next
held annual meeting for the election of directors.  In the event that either (a)
Almedica's  nominee  is not  elected  to Base Ten's  Board of  Directors  or (b)
Almedica  determines  not to nominate any person to be a director of Base Ten or
no  longer  has the right to  nominate  any such  Person  but  Almedica  and its
customers  account for more than 20% of the revenues of ATG and its  successors,
then  Almedica  shall have the right to have one Person  appointed or elected to
the board of directors of ATG or such successor for as long as either clause (a)
or (b) is satisfied.

         7.7 SEC. Almedica acknowledges that following the Closing Date Almedica
will have obligations to file certain reports pursuant to Section 13 and Section
16 of the Securities Exchange Act of 1934, as amended.

         7.8 Cooperation on SEC Filings.  Base Ten and Sellers  acknowledge that
Base Ten may now or in the future be required to include information  concerning
Sellers in SEC reports or other filings. Sellers shall provide Base Ten with any
information,  certificates,  documents or other materials about Sellers that are
reasonably  necessary  to be  included  in such SEC  reports  or other  filings.
Almedica will provide to Base Ten,  within 30 days  following the Closing,  with
respect to ATG, (i) audited balance sheets and audited  statements of income and
cash flows for each of the last three fiscal years, (ii) unaudited balance sheet
and  statements of income and cash flows as of May 31, 1999,  and (iii) manually
executed  auditor's  reports with respect to the audited periods and consents of
the auditor to include any such  reports in any SEC reports or other  filings by
Base Ten.

         7.9 Use of Almedica  Name.  Neither Base Ten nor any of its  Affiliates
shall utilize  after the Closing the name of Almedica or any variant  thereof in
or in  association  with its name or the name of any Software,  other product or
service  provided  thereby  or in  any  marketing,  advertising  or  promotional
materials thereof.

         7.10 Severance. Any person who is an employee of ATG at the time of the
Closing and whose employment by ATG is terminated within twelve months following
the Closing,  shall be entitled to severance  payments in  accordance  with Base
Ten's then existing  policies,  but in no event shall such severance payments be
less than four weeks pay.

         7.11 Public Information.  In the event that Base Ten either fails to or
is not  obligated to comply with the  reporting  requirements  of Sections 13 or
15(d) of the Exchange Act, Base Ten shall use commercially reasonable efforts to
provide comparable financial  information to Almedica and any assignee that owns
more than 5% of the then outstanding Base Ten Shares.

         7.12 Taxes.  The Parties agree that (i) Almedica  shall be  responsible
for the payment of all Taxes to become due following the Closing which relate to
ATG in the period  prior to the  Closing  Date,  except to the  extent  reserved
against on the Latest  Balance Sheet and not thereafter  reduced,  and (ii) Base
Ten shall be  responsible  for the payment of all Taxes to become due  following
the Closing  which  relate to ATG in the period on and after the  Closing  Date;
provided, however, (i) Almedica shall only be responsible for the payment of all
Taxes with respect to withholding and other deductions  required by law for each
payroll  met by ATG  prior to the  Closing,  and (ii)  Base  Ten  shall  only be
responsible  for the payment of all Taxes with respect to withholding  and other
deductions  required  by law for each  payroll  to be met by ATG  following  the
Closing.

         7.13 Joint and  Several  Liability.  With  respect to joint and several
liability  among Sellers,  Almedica  acknowledges  that following the Closing it
will have no claim for indemnification or contribution from ATG.

                                    ARTICLE 8

                                   DEFINITIONS

         8.1 Definitions.  For purposes hereof,  the following terms,  when used
herein with initial  capital  letters,  shall have the  respective  meanings set
forth herein:

                  "Affiliate" of any Person means any other Person  controlling,
controlled by or under common control with such first Person.

                  "Agreement" means this Agreement and Plan of Merger, including
all Schedules  hereto, as it may be amended from time to time in accordance with
its terms.

                  "Assets"  mean the assets of ATG shown on the  Latest  Balance
Sheet or acquired by ATG since the date of the Latest  Balance  Sheet,  less any
assets  disposed of by ATG in the ordinary  course of business since the date of
the Latest Balance Sheet.

                  "Books  and  Records"  means  all  lists,  records  and  other
information  pertaining to accounts,  personnel and referral sources of ATG, all
lists and records  pertaining  to suppliers  and customers of ATG, and all other
books, ledgers,  files and business records of every kind relating or pertaining
to the  Business,  in each case  whether  evidenced  in writing,  electronically
(including by computer) or otherwise.

                  "Business"  means  ATG's  business of  developing,  producing,
manufacturing  and selling  clinical  label and materials  management  software,
including  Almedica Drug Labeling System (ADLS),  Clinical  Materials  Inventory
System (CMIS), AlmediCLaSS, and AlmediFAX.

                  "Code" means the United States Internal  Revenue Code of 1986,
as amended.

                  "Environmental  and Safety  Requirements"  means all  federal,
state, local and foreign statutes, regulations,  ordinances and other provisions
having the force or effect of law, all judicial  and  administrative  orders and
determinations,  all  contractual  obligations  and all common law, in each case
concerning  public health and safety,  worker health and safety and pollution or
protection of the  environment  (including  all those  relating to the presence,
use, production,  generation, handling, transport, treatment, storage, disposal,
distribution,  labeling,  testing,  processing,  discharge,  Release, threatened
Release, control, or cleanup of any Hazardous Substance.

                  "Environmental  Lien"  means any  Lien,  whether  recorded  or
unrecorded,  in favor of any Government Entity relating to any liability arising
under any Environmental and Safety Requirement.

                  "ERISA" means the Employee  Retirement  Income Security Act of
1974, as amended.

                  "GAAP"  means,  at  a  given  time,  United  States  generally
accepted accounting principles, consistently applied.

                  "Government  Entity" means the United States of America or any
other nation, any state or other political  subdivision  thereof,  or any entity
exercising  executive,  legislative,   judicial,  regulatory  or  administrative
functions of government.

                  "Hazardous Substance" means any hazardous,  toxic, radioactive
or chemical  materials,  mixtures,  substances  or wastes;  and  (whether or not
included in the foregoing), any pesticides, pollutants,  contaminants, petroleum
products or by-products, asbestos, polychlorinated biphenyls (or PCBs), noise or
radiation.

                  "Indebtedness" of any Person means, without  duplication:  (a)
indebtedness  for borrowed money or for the deferred  purchase price of property
or  services  in  respect  of which  such  Person  is  liable,  contingently  or
otherwise,  as obligor,  guarantor or otherwise  (other than trade  payables and
other current  liabilities  incurred in the ordinary course of business) and any
commitment  by which such  Person  assures a creditor  against  loss,  including
contingent  reimbursement  obligations  with  respect to letters of credit;  (b)
indebtedness  guaranteed in any manner by such Person,  including a guarantee in
the form of an agreement to  repurchase  or  reimburse;  (c)  obligations  under
capitalized  leases in respect of which such Person is liable,  contingently  or
otherwise,  as  obligor,   guarantor  or  otherwise,  or  in  respect  of  which
obligations such Person assures a creditor against loss; and (d) any unsatisfied
obligation of such Person for "withdrawal  liability" to a "multiemployer plan,"
as such terms are defined under ERISA.

                  "Investment"  means, with respect to any Person, any direct or
indirect purchase or other acquisition by such Person of any notes, obligations,
instruments,  stock,  securities  or  other  ownership  or  beneficial  interest
(including  partnership  interests  and joint  venture  interests)  of any other
Person, and any capital contribution by such Person to any other Person.

                  "Knowledge"  means,  with respect to a Person,  (a) the actual
knowledge of such Person (which includes the actual knowledge of all partners(if
the  Person is a  Partnership),  executive  officers,  directors  and  executive
employees of such Person) and (b) the knowledge which a prudent  business person
would  have  obtained  in  the  conduct  of his or  her  business  after  making
reasonable  inquiry and  reasonable  diligence  with  respect to the  particular
matter in question.

                  "Legal  Requirement"  means any requirement  arising under any
action,  law,  treaty,  rule or  regulation,  determination  or  direction of an
arbitrator  or  Government  Entity,   including  any  Environmental  and  Safety
Requirement.

                  "Lien"  means  any  mortgage,   pledge,   security   interest,
encumbrance,  easement,  restriction on use, restriction on transfer, charge, or
other  lien;  provided,  however,  with  respect to any Asset that is not owned,
"Lien" means any mortgage,  pledge,  security interest,  encumbrance,  easement,
restriction on use, restriction on transfer,  charge, or other lien on the right
of ATG to use or have possession thereof.

                  "Loss" means,  with respect to any Person,  any  diminution in
value, consequential or other damage, liability, demand, claim, action, cause of
action, cost, damage,  deficiency,  Tax, penalty, fine or other loss or expense,
whether or not arising  out of a third  party  claim,  including  all  interest,
penalties,  reasonable  attorneys'  fees and  expenses  and all amounts  paid or
incurred in connection with any action,  demand,  proceeding,  investigation  or
claim by any third party (including any Government  Entity) against or affecting
such Person or which,  if determined  adversely to such Person,  would give rise
to,   evidence  the  existence  of,  or  relate  to,  any  other  Loss  and  the
investigation,  defense or  settlement  of any of the  foregoing,  together with
interest  thereon from the date on which such Person provides the written notice
of the related  claim as described in Section 6.4 through and including the date
on which the total amount of the claim, including such interest, is recovered or
recouped pursuant to Article 6.

                  "Officer's  Certificate"  of any  Person  means a  certificate
signed by such Person's  president or chief financial  officer (or an individual
having comparable responsibilities with respect to such Person) stating that (a)
the individual  signing such  certificate has made or has caused to be made such
investigations as are necessary in order to permit such individual to verify the
accuracy of the information set forth in such certificate and (b) to the best of
such  individual's  Knowledge,  such  certificate does not misstate any material
fact  and does not omit to  state  any fact  necessary  to make the fact  stated
therein not misleading.

                  "Permitted Lien" means, as to the ATG Shares, and, as to other
Assets,  (i) any Lien for Taxes not yet due or delinquent or being  contested in
good faith by  appropriate  proceedings  for which  adequate  reserves have been
established  in accordance  with GAAP,  (ii) any  statutory  Lien arising in the
ordinary course of business by operation of Law with respect to a Liability that
is not yet due or  delinquent  and  (iii)  any  minor  imperfection  of title or
similar Lien which  individually or in the aggregate with other such Liens could
not reasonably be expected to materially adversely affect the Business.

                  "Person" means an individual, a partnership, a corporation, an
association,  a limited  liability  company,  a joint stock company,  a trust, a
joint venture,  an unincorporated  organization and a governmental entity or any
department, agency or political subdivision thereof.

                  "Plans" means all Employee  Pension  Plans,  Employee  Welfare
Plans,  Other Plans and  Multiemployer  Plans to which ATG  contributes  or is a
party.

                  "Proprietary  Rights"  means  all of the  following  owned by,
issued to or licensed to ATG: (a) all  inventions  (whether or not patentable or
reduced  to  practice),  all  improvements  thereto,  and  all  patents,  patent
applications,   and  patent   disclosures,   together   with  all   reissuances,
continuations, continuations-in-part,  revisions, extensions, and reexaminations
thereof; (b) all trademarks, service marks, trade dress, logos, trade names, and
corporate names, together with all translations,  adaptations,  derivations, and
combinations  thereof and including all goodwill associated  therewith,  and all
applications,  registrations,  and  renewals in  connection  therewith;  (c) all
copyrightable  works  (including  software  developed  by  ATG  for  use  in the
Business), all copyrights, and all applications,  registrations, and renewals in
connection  therewith;  (d) all mask works and all applications,  registrations,
and renewals in connection  therewith;  (e) all trade  secrets and  confidential
business  information  (including  ideas,  research and  development,  know-how,
formulas,  compositions,  manufacturing and production processes and techniques,
technical data, designs, drawings, specifications,  customer and supplier lists,
pricing and cost  information,  and business and marketing plans and proposals);
(f) the  Software;  (g) all other  proprietary  rights;  and (h) all  copies and
tangible embodiments thereof (in whatever form or medium).

                  "Release" has the meaning set forth in CERCLA.

                  "SEC"  means  the  United  States   Securities   and  Exchange
Commission.

                  "Securities Act" means the Securities of 1933, as amended.

                  "Software" means all computer programs,  software, data bases,
source codes,  magnetic tape,  diskettes and punchcards used by or useful to ATG
in the conduct of the Business as currently  conducted and presently proposed to
be conducted.

                  "Subsidiary" of any Person means any corporation, partnership,
association or other business entity which such Person,  directly or indirectly,
controls or in which such Person has a majority ownership interest. For purposes
of this definition,  a Person is deemed to have a majority ownership interest in
a partnership,  association or other business entity if such Person is allocated
a majority of the gains or losses of such entity or is or controls  the managing
director or general partner of such entity.

                  "Taxes"  means any federal,  state,  county,  local or foreign
taxes, charges,  fees, levies, other assessments or withholding taxes or charges
imposed by any  governmental  entity and includes  any  interest  and  penalties
(civil or criminal) on or additions to any such taxes.

                  "Tax Return" means any return, declaration,  report, claim for
refund,  or  information  return or statement  relating to Taxes,  including any
schedule or attachment thereto and any amendment thereof.

                  "Transaction  Documents"  means this Agreement,  and all other
agreements, instruments,  certificates and other documents to be entered into or
delivered by any Party in connection with the Merger.

                  "Treasury   Regulations"  means  the  United  States  Treasury
Regulations promulgated pursuant to the Code.

         8.2  Other Definitional Provisions.

                  (a) Accounting  Terms.  Accounting terms which are not defined
herein  have the  meanings  given to them under  GAAP.  To the  extent  that the
definition of an  accounting  term set forth in this  Agreement is  inconsistent
with the meaning of such term under GAAP,  the definition in this Agreement will
control. To the extent that the Financial Statements were prepared in accordance
with GAAP, no change in accounting  principles shall be made from those utilized
in preparing the Financial Statements (without regard to materiality)  including
with respect to the nature of accounts,  level of reserves or level of accruals.
For  purposes of the  preceding  sentence,  "changes in  accounting  principles"
includes all changes in accounting principles,  policies, practices,  procedures
or methodologies with respect to financial  statements,  their classification or
their  display,  as well as all changes in practices,  methods,  conventions  or
assumptions (unless required by objective changes in underlying events) utilized
in making accounting estimates.

                  (b)   "Hereof,"   etc.  The  terms   "hereof,"   "herein"  and
"hereunder"  and terms of similar  import are  references to this Agreement as a
whole and not to any particular provision of this Agreement. Section, clause and
Schedule  references  contained in this  Agreement  are  references to Sections,
clauses and Schedules in or to this Agreement, unless otherwise specified.

                  (c) "Including". The term "including" means including, without
limitation.

                  (d)  Successor  Laws.  Any  reference to any  particular  Code
section  or any other law or  regulation  will be  interpreted  to  include  any
revision of or  successor to that  section  regardless  of how it is numbered or
classified.



                                    ARTICLE 9

                                OTHER AGREEMENTS

         9.1 Rights and  Remedies.  No course of dealing  between the Parties or
failure or delay in exercising any right,  remedy,  power or privilege  (each, a
"right")  pursuant to this  Agreement  will operate as a waiver of any rights of
any  Party,  nor will any  single or partial  exercise  of any right  under this
Agreement  preclude any other or further  exercise of such right or the exercise
of any other right.  Except as expressly set forth herein,  the rights  provided
pursuant to this Agreement are cumulative and not exhaustive of any other rights
which may be provided by law.

         9.2  Waivers,  Amendments  to  be in  Writing.  No  waiver,  amendment,
modification or supplement of this Agreement will be binding upon a Party unless
such waiver,  amendment,  modification or supplement is set forth in writing and
is executed by such Party.

         9.3 Successors and Assigns.  Except as otherwise  expressly provided in
this  Agreement,  all covenants and agreements set forth in this Agreement by or
on behalf of  Almedica  and Base Ten will bind and inure to the  benefit  of the
respective successors and assigns of Almedica and Base Ten, whether so expressed
or not,  except that neither this Agreement nor any of the rights,  interests or
obligations  hereunder  may be assigned by  Almedica  without the prior  written
consent of Base Ten.

         9.4 Governing  Law. This Agreement will be governed by and construed in
accordance  with the domestic  laws of the State of New Jersey,  without  giving
effect to any  choice of law or  conflict  rule of any  jurisdiction  that would
cause the laws of any other  jurisdiction  to be applied.  In furtherance of the
foregoing,  the  internal  law of the  State  of New  Jersey  will  control  the
interpretation  and construction of this Agreement,  even if under any choice of
law or conflict of law analysis,  the substantive law of some other jurisdiction
would ordinarily apply.

         9.5 Jurisdiction. Each of the Parties hereby (i) irrevocably submits to
the  jurisdiction of the state courts of, and the federal courts located in, the
State of New Jersey in any action or  proceeding  arising out of or relating to,
this  Agreement,  (ii)  waives,  and  agrees to assert,  by way of motion,  as a
defense, or otherwise, in any such suit, action or proceeding, any claim that it
is not subject  personally to the jurisdiction of the above-named  courts,  that
its property is exempt or immune from  attachment or  execution,  that the suit,
action or proceeding is brought in an inconvenient  forum, that the venue of the
suit,  action or  proceeding  is improper or that this  Agreement or the subject
matter hereof may not be enforced in or by such court, and waives and agrees not
to seek any  review by any court of any other  jurisdiction  which may be called
upon to grant an enforcement of the judgment of any such court.

         9.6      Notices.

                  (a)  All   demands,   notices,   communications   and  reports
("notices") provided for in this Agreement will be in writing and will be either
personally  delivered,  mailed by first class mail (postage  prepaid) or sent by
reputable  overnight  courier service (delivery charges prepaid) to any Party at
the address specified below, or at such address,  to the attention of such other
Person,  and with such other copy, as the recipient party has specified by prior
written  notice to the sending Party  pursuant to the provisions of this Section
9.6.

                  If to Sellers:

                  Almedica International Inc.
                  75 Commerce Drive
                  Allendale, New Jersey  07401
                  Attention:  President
                  Facsimile Number:  (201) 995-0728

                  with a copy,  which will not constitute  notice to Almedica or
                  ATG (prior to the Closing), to:

                  Skadden, Arps, Slate, Meagher & Flom LLP
                  919 Third Avenue
                  New York, New York  10022
                  Attention:  Richard T. Prins
                  Facsimile Number:  (212) 735-2000

                  If to Purchasers:

                  Base Ten Systems, Inc.
                  One Electronics Drive
                  Trenton, New Jersey
                  Attention:  President
                  Facsimile Number:  (609) 586-3677

                  with a copy,  which  will not  constitute  notice to Base Ten,
                  BTSC or ATG (following the Closing), to:

                  Pitney, Hardin, Kipp & Szuch
                  200 Campus Drive
                  P.O. Box 1945
                  Morristown, New Jersey  07962-1945
                  Attention:  Joseph Lunin
                  Facsimile Number:  (973) 966-1550

                  (b) Any such  notice  will be deemed to have been  given  when
delivered  personally,  on the third business day after deposit in the U.S. mail
or on the business day after deposit with a reputable overnight courier service,
as the case may be.

         9.7  Severability of Provisions.  If any provision of this Agreement is
held to be invalid for any reason whatsoever, then such provision will be deemed
severable  from the remaining  provisions  of this  Agreement and will in no way
affect the validity or enforceability of any other provision of this Agreement.

         9.8  Schedules.  The Schedules  constitute a part of this Agreement and
are incorporated into this Agreement for all purposes.

         9.9  Counterparts.  The Parties may execute this  Agreement in separate
counterparts (no one of which need contain the signatures of all Parties),  each
of which will be an original and all of which  together will  constitute one and
the same instrument.

         9.10  No  Third-Party  Beneficiaries.  Except  as  otherwise  expressly
provided in this  Agreement,  no Person which is not a Party will have any right
or obligation pursuant to this Agreement.

         9.11 Headings.  The headings used in this Agreement are for the purpose
of  reference  only and will not affect the  meaning  or  interpretation  of any
provision of this Agreement.

         9.12  Merger and  Integration.  Except as  otherwise  provided  in this
Agreement,  this  Agreement sets forth the entire  understanding  of the Parties
relating to the subject matter  hereof,  and all prior  understandings,  whether
written or oral, are superseded by this Agreement.




                  IN WITNESS  WHEREOF,  the Parties have executed this Agreement
and Plan of Merger as of the date first written above.

                             ALMEDICA

                             Almedica International Inc.


                                      CLARK L. BULLOCK
                             By:      ______________________________
                                      Name:  CLARK L. BULLOCK
                                      Title: Chairman

                             ATG

                             Almedica Technology Group, Inc.


                                      CLARK L. BULLOCK
                             By:      _____________________________
                                      Name:  CLARK L. BULLOCK
                                      Title: Chairman

                             BASE TEN

                             Base Ten Systems, Inc.


                                      THOMAS E. GARDNER
                             By:      _______________________________
                                      Thomas E. Gardner
                                      President and Chief Executive Officer

                              BTSC

                             Ex-BTS Clinical, Inc.


                                      THOMAS E. GARDNER
                             By:      ______________________________
                                      Thomas E. Gardner
                                      President




                                    Exhibit A


                          REGISTRATION RIGHTS AGREEMENT

         THIS REGISTRATION RIGHTS AGREEMENT (this "Agreement"), dated as of
        ,  is by and between Base Ten  Systems,  Inc., a New Jersey  corporation
(the  "Company")  and  Almedica   International  Inc.,  a  Delaware  corporation
("Almedica").

         WHEREAS, the Company,  Ex-BTS Clinical,  Inc., a New Jersey corporation
("BTSC"),  Almedica and Almedica Technology Group Inc., a New Jersey corporation
("ATG") are parties to that certain  Agreement  and Plan of Merger,  dated as of
June 11, 1999 (the "Merger Agreement"); and

         WHEREAS, unless otherwise defined in this Agreement,  capitalized terms
used in this  Agreement  shall have the  meanings  ascribed to such terms in the
Merger Agreement; and

         WHEREAS,  the Merger Agreement provides for the merger of BTSC with and
into ATG; and

         WHEREAS,  the 736 shares of capital stock of ATG issued and outstanding
immediately  prior to the Effective  Time (the "ATG Shares")  shall be converted
into and exchanged for an aggregate of 3,950,000 shares of Class A Common Stock,
par value $1.00 per share,  of the Company  (the "Base Ten Shares") to Almedica;
and

         WHEREAS,  the Company desires to grant to Almedica certain registration
rights in  certain  circumstances  with  respect  to such Base Ten  Shares  (the
"Registrable Securities");

         NOW  THEREFORE,  in  consideration  of  the  premises  and  the  mutual
covenants and  agreements  contained  herein,  and intending to be legally bound
hereby, the parties to this Agreement hereby agree as follows:

         1.       Registration Rights.

                  (a) Registration Conditions. Almedica shall not be entitled to
any  registration  rights  pursuant  to this  Agreement  until June 12, 2000 and
unless a period of 12 months has elapsed since the Closing Date,  and the number
of the Registrable  Securities then beneficially  owned by Almedica  constitutes
10% or  more  of the  Company's  then  outstanding  Class A  Common  Stock.  The
conditions  set  forth  in  this  Section  1(a)  shall  be  referred  to as  the
"Registration Conditions."

                  (b) Mandatory  Registration.  Provided  that the  Registration
Conditions  have been  satisfied,  the Company  shall,  within 45 days following
receipt of a written request by Almedica,  file a Registration Statement on Form
S-3 (if such form is then  available for use by the Company,  or if such form is
not then  available  for use by the  Company,  such form as is  available to the
Company)  permitting  the  registration  of all or a portion of the  Registrable
Securities  for  resale by  Almedica  in the  manner  reasonably  designated  by
Almedica;  provided,  however, the Company shall not be required to use any form
other than a Form S-3 (or such other form) so long as the Company's inability to
use a Form S-3 is solely a result of  Almedica's  breach of  Section  7.8 of the
Merger Agreement. Almedica shall only be entitled to make one demand pursuant to
this Section 1(b), notwithstanding the fact that its one demand may cover only a
portion of the  Registrable  Securities  then  beneficially  owned by  Almedica;
provided,  however,  that a demand  shall not be  treated  as a demand  unless a
registration  statement  covering  all of the shares as to which such demand was
made becomes  effective for the full period  covered by the following  sentence.
Once effective,  the Company shall use commercially  reasonable  efforts to keep
such registration  statement  continuously effective under the Securities Act of
1933 (the  "Securities  Act")  until the earlier of (i) the date on which all of
the  Registrable  Securities  have  been  sold,  or  (ii)  360  days  after  the
effectiveness of such registration statement (the "Registration Period").

                  (c) Piggyback  Registration.  Provided  that the  Registration
Conditions have been satisfied, the Company shall, at least 30 days prior to the
filing of any  registration  statement  under the  Securities  Act (other than a
registration  statement on Form S-8 or Form S-4 or any  comparable  or successor
forms) relating to the public offering of its Common Stock by the Company or any
of its security holders,  give written notice of such proposed filing and of the
proposed  date thereof to Almedica,  and if, on or before the 20th day following
the date on which such  notice is given,  the  Company  shall  receive a written
request from Almedica  requesting  that the Company include among the securities
covered  by  such  registration   statement  some  or  all  of  the  Registrable
Securities,  the Company  shall  include  such  Registrable  Securities  in such
registration statement, if filed, so as to permit such Registrable Securities to
be sold or  disposed of in the manner and on the terms of the  offering  thereof
set forth in such request.  If the managing  underwriter  advises the Company in
writing  that  the  inclusion  in  such  registration  of  some  or  all  of the
Registrable Securities sought to be registered by Almedica creates a substantial
risk  that the  proceeds  or price  per share  that  will be  derived  from such
registration  will be reduced or that the number of shares to be  registered  at
the insistence of Almedica,  plus the number of shares of Common Stock sought to
be  registered by the Company and any other  stockholders  of the Company is too
large a number to be reasonably  sold, then, in such event, the number of shares
sought to be registered  for the  stockholders  of the Company shall be reduced,
pro rata in  proportion  to the number of shares  sought to be registered to the
number  of  shares  recommended  be  sold  by  the  managing  underwriter.   Any
Registrable  Securities  excluded or withdrawn from such  underwriting  shall be
withdrawn  from such  registration.  With  respect to any  excluded or withdrawn
Registrable  Securities and any Registrable Securities not covered by Almedica's
request for  inclusion in such  registration  statement,  Almedica  shall remain
entitled to receive  additional  notices pursuant to this Section 1(c) until all
Registrable  Securities  have been included in a registration  statement  either
pursuant to Section 1(b) or 1(c) of this Agreement.  Once effective, the Company
shall use commercially  reasonable  efforts to keep such registration  statement
continuously effective under the Securities Act during the Registration Period.


         2. Terms and Conditions of Registration.  Except as otherwise  provided
herein, in connection with any registration  statement filed pursuant to Section
1 above, the following provisions shall apply:


                           (a) In connection with a registration statement filed
pursuant to Section  1(c) above,  the  Company  will enter into an  underwriting
agreement  with  the  underwriters  for  such  offering,  such  agreement  to be
reasonably  satisfactory in form and substance to the Company,  Almedica and the
underwriters,  and to contain such representations,  warranties and covenants by
the Company and such other terms as are customarily contained in such agreements
used by the managing underwriter, including, without limitation, restrictions of
sales of Class A Common  Stock or  other  securities  by the  Company  as may be
reasonably agreed to between the Company and such  underwriters.  Almedica shall
be a party to any underwriting agreement relating to an underwritten sale of the
Registrable Securities and may, at Almedica's option, require that any or all of
the  representations,  warranties  and  covenants  of the  Company to or for the
benefit  of such  underwriters,  shall  also be made to and for the  benefit  of
Almedica. All representations and warranties of Almedica shall be made to or for
the benefit of the Company.


                           (b) The Company  shall  provide a transfer  agent and
registrar  (which may be the same entity) for the  Registrable  Securities,  not
later than the effective date of such registration.


                           (c) All expenses in connection  with the  preparation
and filing of such registration  statement shall be borne solely by the Company,
except for any transfer  taxes payable with respect to the  disposition  of such
Registrable  Securities,  and any underwriting discounts and selling commissions
applicable solely to such sales of Registrable  Securities,  which shall be paid
by Almedica.


                           (d) Following the effective date of such registration
statement,  the Company shall,  upon the request of Almedica,  forthwith  supply
such  number  of  prospectuses   (including  exhibits  thereof  and  preliminary
prospectuses and amendments and supplements thereto) meeting the requirements of
the Securities Act and such other documents as are referred to in the prospectus
as shall be reasonably requested by Almedica to permit Almedica to make a public
distribution of the Registrable Securities.


                           (e) The Company shall prepare, if necessary, and file
such  amendments  and  supplements  to such  registration  statement,  as may be
necessary to keep such registration  statement effective,  subject to applicable
laws, rules and orders, during the Registration Period.


                           (f) The  Company  shall use  commercially  reasonable
efforts to register  the  Registrable  Securities  covered by such  registration
statement  under such  securities or Blue Sky laws in addition to those in which
the Company would otherwise sell shares, as Almedica reasonably requests, except
that neither the Company nor Almedica  shall for any such purpose be required to
execute a general  consent to service of process or to qualify to do business as
a foreign  corporation  in any  jurisdiction  where it is not so qualified.  The
filing fees incurred in connection with such registration  shall be borne by the
Company.


                           (g) Almedica shall  cooperate  fully with the Company
and provide the Company with all information reasonably requested by the Company
for inclusion in the  registration  statement or as necessary to comply with the
Securities Act.


                           (h) The Company  shall notify  Almedica,  at any time
after  effectiveness  when a  prospectus  relating  thereto  is  required  to be
delivered  under the Securities Act of the happening of any event as a result of
which the prospectus included in such registration statement, as then in effect,
includes an untrue  statement of a material  fact or omits to state any material
fact required to be stated therein or necessary to make the  statements  therein
not misleading in light of circumstances then existing (and upon receipt of such
notice and until a  supplemented  or amended  prospectus  as set forth  below is
available,  Almedica  shall not  offer or sell any  securities  covered  by such
registration  statement  and shall return all copies of such  prospectus  to the
Company if requested to do so by it), and at the request of Almedica prepare and
furnish Almedica promptly a reasonable number of copies of a supplement to or an
amendment of such prospectus as may be necessary so that such  prospectus  shall
not include an untrue  statement of a material  fact or omit to state a material
fact required to be stated therein or necessary to make the  statements  therein
not misleading in light of the circumstances than existing.


                           (i) The  Company  will  use  commercially  reasonable
efforts to comply with the  reporting  requirements  of Sections 13 and 15(d) of
the  Securities  Exchange  Act of 1934,  as  amended,  to the extent it shall be
required to do so pursuant to such sections,  and at all times while so required
shall  use  commercially  reasonable  efforts  to comply  with all other  public
information  reporting  requirements of U.S.  Securities and Exchange Commission
(the  "Commission")  Rule 144 promulgated by the Commission under the Securities
Act from time to time in effect to provide  Almedica with the availability of an
exemption from the  Securities  Act for the sale of any of the Company's  common
stock held by  Almedica.  The  Company  will also  cooperate  with  Almedica  in
supplying such information and documentation as may be necessary for Almedica to
complete  and  file any  information  reporting  forms  presently  or  hereafter
required by the  Commission as a condition to the  availability  of an exemption
from  the  Securities  Act for the  sale of any  Company  common  stock  held by
Almedica.


                           (j) In the event of any registration pursuant to this
Agreement,  the Company  agrees to indemnify  and hold  harmless,  to the extent
permitted by law,  Almedica and each person who  controls  Almedica  (within the
meaning of the Securities Act) against all losses, claims, damages,  liabilities
and expenses to which  Almedica or such  controlling  person may become  subject
under the  Securities  Act which are  caused  by any  untrue or  alleged  untrue
statement of material  fact  contained  in the  registration  statement,  or any
omission or alleged omission of a material fact required to be stated therein or
necessary to make the statements  therein not misleading,  except insofar as the
same are caused by or contained in any  information  furnished to the Company by
or on behalf of Almedica or such controlling person for use therein.


         3.       Miscellaneous.

                  (a) Amendments and Waivers.  This Agreement may be amended and
the Company may take any action  herein  prohibited,  or omit to perform any act
herein  required to be performed by it, only if the Company  shall have obtained
the written consent of Almedica to such amendment, action or omission to act.

                  (b)  Successors and Assigns.  This Agreement  shall be binding
upon and shall inure to the benefit of the parties  hereto and their  respective
successors and assigns,  but not transferees of the  Registrable  Securities who
are then  present or former  employees of Almedica or any entity that is then or
was a subsidiary of Almedica.

                  (c) Notices. All notices and other communications provided for
in this  Agreement will be in writing and will be either  personally  delivered,
mailed by first  class mail  (postage  prepaid) or sent by  reputable  overnight
courier service (delivery charges prepaid) to any party at the address specified
below,  or at such other  address or to such other  person as  provided by prior
written notice:


                           If to the Company:

                           Base Ten Systems, Inc.
                           One Electronics Drive
                           Trenton, New Jersey
                           Attention:  President
                           Facsimile Number:  (609) 586-3677

                           With a copy to:

                           Pitney, Hardin, Kipp & Szuch
                           200 Campus Drive
                           P.O. Box 1945
                           Morristown, New Jersey  07962-1945
                           Attention:  Joseph Lunin
                           Facsimile Number:  (973) 966-1550


                           If to Almedica:

                           Almedica International Inc.
                           75 Commerce Drive
                           Allendale, New Jersey  07401
                           Attention:  President
                           Facsimile Number:  (201) 995-0728

                           With a copy to:

                           Skadden, Arps, Slate, Meagher & Flom LLP
                           919 Third Avenue
                           New York, New York  10022
                           Attention:  Richard T. Prins
                           Facsimile Number:  (212) 451-7519

Any such notice will be deemed to have been given when delivered personally,  on
the third  business  day after  deposit in the U.S.  mail or on the business day
after deposit with a reputable overnight courier service, as the case may be.

                  (d) Descriptive  Headings.  The  descriptive  headings of this
Agreement are inserted for convenience only and do not constitute a part of this
Agreement.

                  (e)  Severability.  If any provision of this Agreement is held
to be invalid  for any reason  whatsoever,  then such  provision  will be deemed
severable  from the remaining  provisions  of this  Agreement and will in no way
affect the validity or enforceability of any other provision of this Agreement.

                  (f)  Counterparts.  The parties to this  Agreement may execute
this  Agreement  in  separate  counterparts  (no one of which need  contain  the
signatures of all  parties),  each of which will be an original and all of which
together will constitute one and the same instrument.

                  (g)  Governing  Law.  This  Agreement  will be governed by and
construed  in  accordance  with the  domestic  laws of the State of New  Jersey,
without giving effect to any choice of law or conflict rule of any  jurisdiction
that  would  cause  the  laws  of  any  other  jurisdiction  to be  applied.  In
furtherance of the  foregoing,  the internal law of the State of New Jersey will
control the interpretation and construction of this Agreement, even if under any
choice of law or conflict of law  analysis,  the  substantive  law of some other
jurisdiction would ordinarily apply.

                  (h)  Jurisdiction.  Each of the parties hereby (i) irrevocably
submits to the  jurisdiction  of the state  courts of,  and the  federal  courts
located in, the State of New Jersey in any action or  proceeding  arising out of
or relating to, this  Agreement,  (ii) waives,  and agrees to assert,  by way of
motion, as a defense, or otherwise, in any such suit, action or proceeding,  any
claim that it is not subject  personally to the  jurisdiction of the above-named
courts, that its property is exempt or immune from attachment or execution, that
the suit,  action or proceeding is brought in an  inconvenient  forum,  that the
venue of the suit,  action or proceeding  is improper or that this  Agreement or
the subject  matter  hereof may not be enforced in or by such court,  and waives
and agrees not to seek any review by any court of any other  jurisdiction  which
may be called upon to grant an enforcement of the judgment of any such court.

                  (i) Merger and  Integration.  Except as otherwise  provided in
this  Agreement,  this  Agreement  sets  forth the entire  understanding  of the
parties  relating to the subject  matter hereof,  and all prior  understandings,
whether written or oral, are superseded by this Agreement.






                  IN  WITNESS  WHEREOF,   the  undersigned  have  executed  this
Registration Rights Agreement as of the date first written above.


                          BASE TEN SYSTEMS, INC.



                          By:      _______________________________
                                   Name:  William F. Hackett
                                   Title: Senior Vice President


                          ALMEDICA INTERNATIONAL INC.



                          By:      _______________________________
                                   Name:  Clark L. Bullock
                                   Title: Chairman of the Board