EXCHANGE AGREEMENT


         EXCHANGE AGREEMENT (this  "Agreement"),  dated as of December 31, 1998,
by and among Base Ten Systems,  Inc., a New Jersey  corporation (the "Company"),
and the holders of the Series A Preferred  Shares (as defined below),  set forth
on the signature pages hereto (the "Holders").

         WHEREAS:

         A. The  Company  and the  Holders are  executing  and  delivering  this
Agreement in reliance upon the exemption from securities  registration  afforded
by Rule 506 under  Regulation D  ("Regulation  D") as  promulgated by the United
States  Securities and Exchange  Commission (the "SEC") under the Securities Act
of 1933, as amended (the "1933 Act");

         B. The Company  and the  Holders  entered  into a  Securities  Purchase
Agreement, dated as of December 4, 1997 (the "Purchase Agreement"),  pursuant to
which the Holders (i)  purchased  the Company's  Convertible  Preferred  Shares,
Series A (the "Series A Preferred  Shares"),  which are convertible into Class A
Common Shares,  $1.00 par value per share, of the Company (the "Common  Stock"),
upon the terms and subject to the  limitations  and  conditions set forth in the
Certificate of Amendment of Restated Certificate of Incorporation  Providing for
Designation,  Preferences and Rights of the Convertible Preferred Shares, Series
A (the "Series A Certificate of Designation")  and (ii) in consideration for the
purchase  of the  Series A  Preferred  Shares,  received  Class A  Common  Stock
Purchase Warrants to purchase shares of Common Stock (the "Series A Warrants");

         C. In  connection  with the  Purchase  Agreement,  the  Company and the
Holders entered into a Registration  Rights  Agreement,  dated as of December 4,
1997 (the "Registration Rights Agreement");

         D.  The  Company  has  authorized  a new  series  of  preferred  stock,
designated as Series B Convertible  Preferred  Stock (together with any Series B
Preferred  Stock  issued in  replacement  thereof  or as a  dividend  thereon or
otherwise with respect thereto in accordance with the terms thereof, the "Series
B Preferred Shares"), having the rights, preferences and privileges set forth in
the Certificate of Amendment of Restated Certificate of Incorporation  Providing
for  Designation,  Preferences and Rights of the Convertible  Preferred  Shares,
Series  B,  attached  hereto  as  Exhibit  "A" (the  "Series  B  Certificate  of
Designation"),  which are convertible into shares of Common Stock upon the terms
and  subject  to the  limitations  and  conditions  set  forth  in the  Series B
Certificate of Designation (the "Conversion Shares");

         E. The Company has authorized the issuance to the Holders of additional
Class A Common Stock Purchase  Warrants,  in the form attached hereto as Exhibit
"B", to purchase shares of Common Stock (the "Additional Warrants");

         F. The  Company  desires to amend the terms of the Series A Warrants in
accordance  with the terms of this  Agreement  by issuing new  warrants,  in the
forms attached  hereto as Exhibit "B" and Exhibit "C",  containing  such amended
terms in  exchange  for the  outstanding  Series A Warrants  (collectively,  the
"Amended Warrants" and together with the Additional  Warrants,  the "Warrants").
The shares of Common Stock  issuable  upon exercise of the Warrants are referred
to herein as the "Warrant Shares";

         G. The Company  desires to (i) have each Holder  exchange the number of
Series A Preferred Shares identified on the signature pages hereto as being held
by such  Holder  and all  Series A  Preferred  Shares  hereafter  issued to such
Holders,  for Series B Preferred Shares,  (ii) amend the terms of certain of the
outstanding  Series A Warrants  held by each  Holder by issuing to each Holder a
number of Amended Warrants, in the form attached hereto as Exhibit "B," equal to
the number of Series A Warrants received by the Holders in consideration for the
purchase of the Series A Preferred Shares being exchanged for Series B Preferred
Shares and for certain Series A Preferred  Shares held and thereafter  converted
prior to the date  hereof,  (iii) amend the terms of certain of the  outstanding
Series A Warrants  held by each  Holder by  issuing  to each  Holder a number of
Amended  Warrants,  in the form  attached  hereto as  Exhibit  "C," equal to the
number of Series A Warrants  held by the Holders but not included in clause (ii)
of this Recital G, and (iv) issue to each Holder Additional Warrants,  each upon
the terms and conditions stated in this Agreement;

         H. Each Holder  wishes to (i) exchange the number of Series A Preferred
Shares identified on the signature pages hereto as being held by such Holder and
all Series A Preferred  Shares  hereafter  issued to such Holders,  for Series B
Preferred  Shares,  (ii) amend the terms of the  Series A Warrants  held by such
Holder on the  Closing  Date (as  defined  below) by  exchanging  such  Series A
Warrants for an equal number of Amended Warrants,  and (iii) receive a number of
Additional  Warrants,  each  upon  the  terms  and  conditions  stated  in  this
Agreement;

         I. All  capitalized  terms used but not defined in this Agreement shall
have the meanings ascribed to them in either the Purchase Agreement,  the Series
A Certificate of Designation or the Registration Rights Agreement.  The Series B
Preferred Shares, the Warrants, the Conversion Shares and the Warrant Shares are
collectively referred to herein as the "Securities".

         NOW THEREFORE,  the Company and each of the Holders  severally (and not
jointly) hereby agree as follows:


                  1.  EXCHANGE  OF  SERIES  A  PREFERRED  SHARES  FOR  SERIES  B
PREFERRED SHARES; AMENDMENT OF WARRANTS; AND ISSUANCE OF ADDITIONAL WARRANTS.

                           a. Exchange of Series A Preferred Shares for Series B
Preferred Shares. On the Closing Date (as defined below),  (i) the Company shall
issue to each  Holder a  number  of  Series B  Preferred  Shares  (or  fractions
thereof)  having  an  aggregate  Purchase  Price  (as  defined  in the  Series B
Certificate of  Designation)  equal to the Aggregate  Exchange Value (as defined
herein) of the Series A  Preferred  Shares  identified  on the  signature  pages
hereto as being held by such  Holder and (ii) each Holder  shall  deliver all of
such  outstanding  Series A Preferred Shares to the Company in exchange for such
number of Series B Preferred Shares  determined in accordance with clause (i) of
this Section 1(a). For purposes  hereof,  the "Aggregate  Exchange Value" of the
outstanding  Series A Preferred  Shares held by a Holder  shall equal the sum of
(x) the  aggregate  Purchase  Price (as defined in the Series A  Certificate  of
Designation) of such Series A Preferred Shares,  plus (y) any accrued and unpaid
dividends on such Series A Preferred  Shares through the Closing Date,  plus (z)
any accrued and unpaid Illiquidity Payments,  Conversion Default Payments,  Late
Registration  Payments,  Delay Compensation and Delisting Payments (as each such
term is defined in the Series A Certificate of Designation) with respect to such
Series A Preferred Shares through the Closing Date.

                           b.  Amendment of the Series A Warrants by Issuance of
the Amended  Warrants.  On the Closing Date (as defined below),  (i) the Company
shall amend 40,000  Series A Warrants  for each 1,000 Series A Preferred  Shares
(or a portion  thereof for less than 1,000  shares)  identified on the signature
pages hereto as being held by each Holder,  hereafter issued to such Holder, and
held by such Holder on September 1, 1998 and thereafter  converted at a Variable
Conversion  Price (as defined in the Series A  Certificate  of  Designation)  of
$4.00  (or  more)  prior  to  November  9,  1998,  by  issuing  to  each  Holder
certificates  representing the number of Amended Warrants,  in the form attached
hereto as Exhibit "B",  equal to the number of such Series A Warrants  exchanged
by such Holder and (ii) the Company shall amend all other Series A Warrants held
by each Holder which are not included in clause (i) of this Section  (1)(b),  by
issuing to each Holder certificates representing the number of Amended Warrants,
in the form attached hereto as Exhibit "C", equal to the number of such Series A
Warrants  exchanged by such Holder.  Each Holder  shall  surrender  all Series A
Warrants then held by such Holder in exchange for  certificates  representing an
equal number of Amended  Warrants in the form attached  hereto as Exhibit "B" or
Exhibit "C", as applicable..  The certificates for the Amended  Warrants,  which
shall be in the form  attached  hereto as Exhibit  "B",  shall  contain the same
terms as the Series A Warrants but shall include the following amendments:

                                    (i) The  Exercise  Price (as  defined in the
Series A Warrants) shall be reduced from $16.25 to $3.00;

                                    (ii) The Holder shall be permitted to effect
a Cashless  Exercise pursuant to Section 1(b) of the Series A Warrants only when
(x) the prospectus  included in the  Registration  Statement (as defined herein)
includes an untrue  statement of material fact or omits to state a material fact
required to be stated  therein or necessary to make the  statement  therein,  in
light of the  circumstances  under which they were made, not misleading,  or (y)
sales cannot be made pursuant to the  Registration  Statement in compliance with
the  securities  laws for any  other  reason;  and

                                    (iii) The  Company  shall be entitled on any
day occurring on or after the first anniversary of the Closing Date on which the
Closing Bid Price (as defined in the Series B Certificate of Designation) of the
Common Stock on each trading day during the twenty (20) consecutive  trading day
period ending on the trading day  immediately  preceding  such date (such twenty
(20) consecutive trading day period being referred to herein as the "Calculation
Period")  is equal to or  greater  than  $4.00 per  share,  to deliver a written
notice to the Holder  requiring such Holder to exercise the Amended  Warrants in
accordance  with the terms  thereof on the date which is ten (10)  trading  days
following the date of such notice (the "Exercise Date"); provided, however, that
the Company shall have such right if and only if (x) for a period of thirty (30)
consecutive  trading days prior to the beginning of such Calculation  Period and
(y) at all times  during  such  Calculation  Period and  continuing  through the
Exercise  Date, the Warrant Shares are (1) authorized and reserved for issuance,
(2) listed for trading on each principal  exchange or market on which the shares
of Common  Stock of the Company were then traded and (3)  registered  for resale
pursuant to an effective  registration  statement under the 1933 Act;  provided,
further,  however, that the Holder shall not be required to exercise the Amended
Warrants  with  respect to any such  notice  unless the Closing Bid Price of the
Common Stock on the trading day  immediately  preceding  the Exercise Date is at
least equal to $3.90 and the aggregate of cash (and cash  equivalents)  as shown
on the most recent  balance  sheet of the Company  filed by the Company with the
Securities and Exchange  Commission pursuant to Section 15 (d) of the Securities
Exchange Act of 1934, is less than $5,000,000.

                                    The certificates  for the Amended  Warrants,
which shall be in the form  attached  hereto as Exhibit "C",  shall  contain the
same terms as the Series A Warrants  but shall be amended to provide that in the
event the Holder  thereof is also the  Holder of  Amended  Warrants  in the form
attached  hereto as Exhibit  "B",  and the Company  shall be entitled  under the
terms thereof to deliver a written notice to the Holder requiring such Holder to
exercise such Amended  Warrants in the form attached  hereto as Exhibit "B", and
the Company gives such notice,  and the conditions to require such exercise have
been met, then the Exercise Price for such Amended Warrants in the form attached
hereto as Exhibit  "C" shall  thereafter  equal the  lesser of (i) the  Exercise
Price then in effect under such Amended  Warrants in the form attached hereto as
Exhibit "C" and (ii) the  Closing  Bid Price of the Common  Stock on the trading
day immediately preceding the Exercise Date with respect to the Amended Warrants
in the form attached hereto as Exhibit "B."

                           c.  Issuance of Additional  Warrants.  On the Closing
Date (as defined  below),  the Company shall issue to each Holder Forty Thousand
(40,000)  Additional  Warrants  for each One  Million  Dollars  ($1,000,000)  of
Aggregate  Exchange  Value (or a portion  thereof for less than  $1,000,000)  of
Series A Preferred  Shares being exchanged by such Holder on the Closing Date or
held by such Holder on September 1, 1998 and thereafter  converted at a Variable
Conversion  Price (as defined in the Series A  Certificate  of  Designation)  of
$4.00 (or more) prior to  November 9, 1998.  The  Additional  Warrants  shall be
identical  to the Amended  Warrants in the form  attached  hereto as Exhibit "B"
except  that the term of the  Additional  Warrants  shall be four years from the
date of issuance of the Additional Warrants.

                           d.  Closing  Date.  Subject to the  satisfaction  (or
waiver) of the  conditions  thereto  set forth in Section 6 and Section 7 below,
the date and time of the exchange of the Series A Preferred  Shares and Series A
Warrants and issuance of the Series B Preferred Shares, the Amended Warrants and
the Additional Warrants pursuant to this Agreement (the "Closing Date") shall be
12:00 noon Eastern Standard Time within five (5) business days after the date on
which the  conditions  set forth in Sections 7(i) and 7(j) are met or such other
mutually  agreed upon time;  provided that the Closing (as defined herein) shall
occur no later than March 15, 1999. The closing of the transactions contemplated
by this Agreement (the "Closing") shall occur on the Closing Date at the offices
of the Company,  One Electronics  Drive,  Trenton,  New Jersey 08619, or at such
other location as may be agreed to by the parties.

                  2.  HOLDERS'  REPRESENTATIONS  AND  WARRANTIES.   Each  Holder
severally (and not jointly)  represents and warrants to the Company solely as to
such Holder that:

                           a.  Authorization;  Enforcement.  This  Agreement has
been duly and validly  authorized.  This  Agreement  has been duly  executed and
delivered on behalf of the Holder,  and this  Agreement  constitutes a valid and
binding agreement of the Holder enforceable in accordance with its terms.


                  3.  REPRESENTATIONS AND WARRANTIES OF THE COMPANY. The Company
represents and warrants to each Holder that:

                           a.  Organization and  Qualification.  The Company and
each of its  subsidiaries,  if any, is a  corporation  duly  organized,  validly
existing and in good standing under the laws of the  jurisdiction in which it is
incorporated, with full power and authority (corporate and other) to own, lease,
use and operate  its  properties  and to carry on its  business as and where now
owned,  leased,  used,  operated  and  conducted.  The  Company  and each of its
subsidiaries is duly qualified as a foreign corporation to do business and is in
good standing in every jurisdiction in which its ownership or use of property or
the nature of the business  conducted by it makes such  qualification  necessary
except where the failure to be so qualified or in good standing would not have a
Material  Adverse Effect.  "Material  Adverse Effect" means any material adverse
effect on (i) the Securities, (ii) the business,  operations,  assets, financial
condition or prospects of the Company and its  subsidiaries,  if any, taken as a
whole, or (iii) on the transactions  contemplated hereby or by the agreements or
instruments to be entered into in connection herewith.

                           b.  Authorization;  Enforcement.  (i) The Company has
all requisite  corporate power and authority to file and perform its obligations
under the Series B Certificate of Designation and to enter into and perform this
Agreement  and the  Warrants and to  consummate  the  transactions  contemplated
hereby and thereby and to issue the  Securities,  in  accordance  with the terms
hereof and thereof,  (ii) the execution  and delivery of this  Agreement and the
Warrants  by  the  Company  and  the  consummation  by  it of  the  transactions
contemplated hereby and thereby (including without  limitation,  the issuance of
the Series B Preferred  Shares and the Warrants and the issuance and reservation
for  issuance  of  the  Conversion  Shares  and  Warrant  Shares  issuable  upon
conversion or exercise thereof) have been duly authorized by the Company's Board
of Directors and no further consent or authorization  of the Company,  its Board
of  Directors,  or its  shareholders,  including  any approval  required by Rule
4460(i) of the National  Association  of Securities  Dealers,  Inc., is required
(other than the  approval of the holders of Series A Preferred  Shares  effected
pursuant to Section 8(e)(i) hereof), (iii) this Agreement has been duly executed
and  delivered by the Company,  and (iv) this  Agreement  constitutes,  and upon
execution  and  delivery by the Company of the Warrants  and the  execution  and
filing of the Series B Certificate of  Designation,  each of such agreements and
instruments  will  constitute,  a legal,  valid and  binding  obligation  of the
Company enforceable against the Company in accordance with its terms.

                           c. Issuance of Shares. The Series B Preferred Shares,
upon  issuance  in  accordance  with the terms of this  Agreement,  will be duly
authorized and validly issued, fully paid and non-assessable,  and free from all
taxes,  liens,  claims and  encumbrances  with respect to the issue  thereof and
shall  not  be  subject  to  preemptive   rights  or  other  similar  rights  of
shareholders  of the Company  and will not impose  personal  liability  upon the
holder thereof. The Conversion Shares and Warrant Shares are duly authorized and
reserved for issuance, and, upon conversion of the Series B Preferred Shares and
exercise of the Warrants in accordance  with the terms thereof,  will be validly
issued,  fully paid and  non-assessable,  and free from all taxes, liens, claims
and encumbrances  and will not be subject to preemptive  rights or other similar
rights or  shareholders  of the Company and will not impose  personal  liability
upon the holder thereof.

                           d.   Series   of   Preferred   Shares.   The   terms,
designations,  powers,  preferences and relative,  participating and optional or
special rights,  and the  qualifications,  limitations and  restrictions of each
series of  preferred  stock of the  Company  (other  than the Series B Preferred
Shares) are as stated in the Certificate of Incorporation,  filed on or prior to
the date hereof, and the Bylaws. The terms,  designations,  powers,  preferences
and  relative,   participating   and  optional  or  special   rights,   and  the
qualifications,  limitations and  restrictions of the Series B Preferred  Shares
are as stated in the Series B Certificate of Designation.

                           e.  No  Conflicts.   The   execution,   delivery  and
performance  of  this  Agreement  and  the  Warrants  by  the  Company  and  the
consummation by the Company of the transactions  contemplated hereby and thereby
(including,  without  limitation,  the  filing of the  Series B  Certificate  of
Designation  and the issuance  and  reservation  for issuance of the  Conversion
Shares and Warrant  Shares) will not (i) conflict  with or result in a violation
of any provision of the Certificate of Incorporation or By-laws (each as defined
in the  Purchase  Agreement)  or (ii) violate or conflict  with,  or result in a
breach of any  provision  of, or  constitute  a default  (or an event which with
notice or lapse of time or both could become a default) under, or give to others
any rights of  termination,  amendment,  acceleration  or  cancellation  of, any
agreement,  indenture, patent, patent license or instrument to which the Company
or any of its  subsidiaries  is a party,  or (iii)  result in a violation of any
law, rule,  regulation,  order,  judgment or decree (including federal and state
securities  laws  and   regulations  and  regulations  of  any   self-regulatory
organizations to which the Company or its securities are subject)  applicable to
the Company or any of its  subsidiaries or by which any property or asset of the
Company  or any of its  subsidiaries  is  bound  or  affected  (except  for such
conflicts, defaults, terminations, amendments, accelerations,  cancellations and
violations  as would  not,  individually  or in the  aggregate,  have a Material
Adverse Effect). Neither the Company nor any of its subsidiaries is in violation
of its Certificate of Incorporation,  By-laws or other organizational  documents
and neither the Company nor any of its  subsidiaries is in default (and no event
has occurred which with notice or lapse of time or both could put the Company or
any of its  subsidiaries in default)  under,  and neither the Company nor any of
its  subsidiaries  has taken any action or failed to take any action  that would
give  to  others  any  rights  of   termination,   amendment,   acceleration  or
cancellation of, any agreement,  indenture or instrument to which the Company or
any of its  subsidiaries  is a party or by which any  property  or assets of the
Company or any of its  subsidiaries  is bound or  affected,  except for possible
defaults as would not, individually or in the aggregate, have a Material Adverse
Effect.  The  businesses  of the Company and its  subsidiaries,  if any, are not
being conducted,  and shall not be conducted so long as a Holder owns any of the
Securities, in violation of any law, ordinance or regulation of any governmental
entity.  Except as  specifically  contemplated by this Agreement and as required
under the 1933 Act and any applicable  state securities laws, the Company is not
required to obtain any consent, authorization or order of, or make any filing or
registration  with, any court,  governmental  agency,  regulatory  agency,  self
regulatory  organization  or stock  market or any third party in order for it to
execute,  deliver or perform any of its obligations under this Agreement, or the
Warrants in accordance with the terms hereof or thereof or to issue the Series B
Preferred  Shares and Warrants in accordance  with the terms hereof and to issue
the Conversion  Shares upon conversion of the Series B Preferred  Shares and the
Warrant  Shares upon  exercise of the Warrants.  All  consents,  authorizations,
orders,  filings  and  registrations  which the  Company is  required  to obtain
pursuant to the preceding sentence have been obtained or effected on or prior to
the date  hereof.  The  Company is not in  violation  of the  continued  listing
requirements of the Nasdaq  National  Market  ("Nasdaq") and does not reasonably
anticipate  that  the  Common  Stock  will  be  delisted  by the  Nasdaq  in the
foreseeable future. The Company and its subsidiaries are unaware of any facts or
circumstances which might give rise to any of the foregoing.

                           f.  Disclosure.   All  information   relating  to  or
concerning  the Company or any of its  subsidiaries  set forth in this Agreement
and provided to the Holders in  connection  with the  transactions  contemplated
hereby is true and  correct in all  material  respects  and the  Company has not
omitted to state any material  fact  necessary  in order to make the  statements
made  herein or  therein,  in light of the  circumstances  under which they were
made,  not  misleading.  No event or  circumstance  has  occurred or exists with
respect to the  Company  or any of its  subsidiaries  or its or their  business,
properties,   prospects,   operations  or  financial  conditions,  which,  under
applicable law, rule or regulation,  requires public  disclosure or announcement
by the  Company  but  which  has not been so  publicly  announced  or  disclosed
(assuming for this purpose that the  Company's  reports filed under the 1934 Act
(as defined in the Purchase  Agreement) are being incorporated into an effective
registration statement filed by the Company under the 1933 Act).

                           g.  Acknowledgment  Regarding  Holders'  Purchase  of
Securities.  The  Company  acknowledges  and agrees  that the Holders are acting
solely in the capacity of arm's length purchasers with respect to this Agreement
and the transactions  contemplated hereby. The Company further acknowledges that
no Holder is acting as a financial  advisor or  fiduciary  of the Company (or in
any  similar  capacity)  with  respect to this  Agreement  and the  transactions
contemplated  hereby  and any  statement  made  by any  Holder  or any of  their
respective  representatives  or agents in connection with this Agreement and the
transactions contemplated hereby is not advice or a recommendation and is merely
incidental  to the  Holders'  purchase of the  Securities.  The Company  further
represents  to each  Holder  that the  Company's  decision  to enter  into  this
Agreement has been based solely on the independent evaluation of the Company and
its representatives.

                           h. No Integrated  Offering.  Neither the Company, nor
any of its  affiliates,  nor any  person  acting  on its or  their  behalf,  has
directly or indirectly made any offers or sales in any security or solicited any
offers to buy any security under  circumstances that would require  registration
under  the  1933 Act of the  issuance  of the  Securities  to the  Holders.  The
issuance of the Securities to the Holders will not be integrated  with any other
issuance of the Company's  securities (past,  current or future) for purposes of
any shareholder approval provisions  applicable to the Company or its securities
other than the issuance of the Series A Preferred Shares.

                           i. Recent  Sale of Common  Stock.  After  November 9,
1998, the Company issued, in a private placement, 6,666,666 shares of its Common
Stock for an aggregate of $19,999,998, together with the issuance of warrants to
purchase  1,000,000  shares of Common  Stock at an  exercise  price of $3.00 per
share.


                  4.       COVENANTS.

                           a. Best  Efforts.  The  parties  shall use their best
efforts to satisfy timely each of the  conditions  described in Sections 6 and 7
of this Agreement.

                           b.  Additional   Equity   Capital.   Subject  to  the
exceptions  described  below,  during the Lock-up  Period (as defined below) the
Company will not, without the prior written consent of a majority-in-interest of
the Holders,  negotiate or contract with any party to obtain  additional  equity
financing  (including debt financing with an equity component) that involves (A)
the  issuance of Common  Stock at a discount  to the market  price of the Common
Stock on the date of issuance  (taking into account the value of any warrants or
options to acquire  Common  Stock  issued in  connection  therewith)  or (B) the
issuance of convertible  securities that are convertible  into an  indeterminate
number of shares of Common  Stock or (C) the  issuance of Common  Stock upon the
conversion of a security  convertible  into, or  exercisable  for,  Common Stock
based on a conversion or exercise  price which was fixed at the time of issuance
of the security  being  converted or exercised at a discount to the market price
of the Common Stock on the date of issuance of such  convertible  or exercisable
security (the limitations referred to in this sentence are collectively referred
to as the "Capital  Raising  Limitations").  The "Lock-up  Period" is the period
beginning on the date hereof and ending three hundred sixty-five (365) days from
the  Closing  Date  (plus  any days in which  sales  cannot  be made  under  the
Registration  Statement (as defined  below)).  The Capital  Raising  Limitations
shall not apply to any  transaction  involving  (i) issuances of securities in a
firm commitment  underwritten  public offering  (excluding a continuous offering
pursuant  to Rule 415 under the 1933  Act),  (ii)  issuances  of  securities  as
consideration  for  a  merger,  consolidation  or  purchase  of  assets,  or  in
connection with any strategic  partnership or joint venture (the primary purpose
of which is not to raise equity capital),  or in connection with the disposition
or  acquisition of a business,  product or license by the Company,  or (iii) the
issuance of Common Stock upon the conversion of a security  convertible  into or
exercised  for,  Common Stock based on a conversion or exercise  price which was
fixed at the time of issuance of the security being  converted or exercised at a
price equal to or greater  than the market price of the Common Stock on the date
of issuance of such  convertible or exercisable  security.  The Capital  Raising
Limitations  also shall not apply to the issuance of securities upon exercise or
conversion of the Company's  options,  warrants or other convertible  securities
outstanding  as of the date  hereof or to the  grant of  additional  options  or
warrants,  or the issuance of  additional  securities,  under any Company  stock
option or restricted stock plan approved by the shareholders of the Company.

                           c.  Expenses.  Each of the parties to this  Agreement
shall bear their own expenses.

                           d.  Reservation  of Shares.  The Company shall at all
times have  authorized,  and reserved for the purpose of issuance,  a sufficient
number of shares of Common Stock to provide for the full  conversion or exercise
of the  outstanding  Series B Preferred  Shares and Warrants and issuance of the
Conversion  Shares and  Warrant  Shares in  connection  therewith  (based on the
Conversion  Price of the  Series B  Preferred  Shares or  Exercise  Price of the
Warrants in effect from time to time).  The Company  shall not reduce the number
of shares of Common  Stock  reserved for issuance  upon  conversion  of Series B
Preferred Shares and exercise of the Warrants without the consent of each Holder
then owning any shares of Series B  Preferred  Shares or  Warrants.  The Company
shall use its best  efforts  at all times to  maintain  the  number of shares of
Common  Stock so reserved  for  issuance at no less than the number that is then
actually  issuable  upon full  conversion  of the Series B Preferred  Shares and
exercise  of the  Warrants  (based  on the  Conversion  Price  of the  Series  B
Preferred Shares or Exercise Price of the Warrants in effect from time to time).
If at any time the number of shares of Common Stock  authorized and reserved for
issuance is below the number of Conversion  Shares and Warrant Shares issued and
issuable upon  conversion  of the Series B Preferred  Shares and exercise of the
Warrants  (based on the  Conversion  Price of the Series B  Preferred  Shares or
Exercise  Price of the Warrants then in effect),  the Company will promptly take
all corporate action  necessary to authorize and reserve a sufficient  number of
shares, including, without limitation, calling a special meeting of shareholders
to authorize  additional  shares to meet the  Company's  obligations  under this
Section 4(d), in the case of an insufficient  number of authorized  shares,  and
using its best  efforts to obtain  shareholder  approval  of an increase in such
authorized number of shares.

                           e. No  Integration.  The  Company  shall not make any
offers or sales of any security (other than the Securities) under  circumstances
that  would  require  registration  of the  Securities  being  offered  or  sold
hereunder  under  the  1933  Act or  cause  the  offering  of  Securities  to be
integrated  with any other offering of securities by the Company for the purpose
of  any  shareholder  approval  provision  applicable  to  the  Company  or  its
securities.


                           f.  Integration of Certain  Covenants of the Purchase
Agreement.  The  agreements  and  covenants set forth in Sections 2.6, 2.7, 4.2,
4.3,  4.4,  4.5  and  4.6 and  Article  V of the  Purchase  Agreement  shall  be
incorporated  herein  and  shall be  applicable  as if the  terms  "Securities",
"Preferred  Shares",  "Warrants," "Common Shares" and "Warrant Shares" set forth
in the  Purchase  Agreement  are  deemed to  include  the  Securities,  Series B
Preferred  Shares,  Warrants,  Common Shares and Warrant  Shares,  respectively.
References in such sections of the Purchase  Agreement to the "Agreement"  shall
be deemed to mean this Agreement.


                  5.       REGISTRATION  RIGHTS.

                           a.  Registration  Rights.  On or before  January  13,
1999,  the  Company  shall  file a  registration  statement  (the  "Registration
Statement") with the Securities and Exchange Commission (the "SEC") covering the
resale by the Holders of (i) the Conversion  Shares  issuable upon conversion of
the Series B Preferred Shares and (ii) the Warrant Shares issuable upon exercise
of the Warrants.

                           b.  Incorporation of Registration  Rights  Agreement.
The terms, rights and obligations set forth in the Registration Rights Agreement
shall be incorporated herein subject to the following amendments:

                                    (i) The term "Registrable  Securities" shall
be deemed to include (i) the Conversion  Shares  issuable upon conversion of the
Series B Preferred Shares, (ii) the Warrant Shares issuable upon exercise of the
Warrants  and (iii) the Common  Stock  issued  upon  conversion  of the Series A
Preferred Shares;

                                    (ii) The time  periods  required  for filing
the  Registration  Statement and the Required  Effective Date (as defined in the
Registration  Rights  Agreement)  set forth in Section 2(a) of the  Registration
Rights Agreement shall not apply to the Registration Statement and the number of
shares of Common Stock initially included in the Registration Statement shall be
no less than the sum of (i) 1.5 times the number of  Conversion  Shares and (ii)
the  number  of  Warrant  Shares,  as  determined  on the date of  filing of the
Registration Statement (assuming, for purposes of such determination,  that such
date of filing is the  Closing  Date such that all of the Amended  Warrants  and
Additional  Warrants  have been issued and all of the Series A Preferred  Shares
then outstanding have been exchanged for Series B Preferred Shares); and

                                    (iii)  Section  2(b)  of  the   Registration
Rights Agreement shall not apply to the Registrable Securities.

                           c. Acknowledgement  Regarding  Registration of Common
Stock Underlying  Series A Preferred  Shares.  The shares of Common Stock issued
upon  conversion  of the  Series A  Preferred  Shares are  registered  under the
Company's  Registration  Statement on Form S-3, File No. 333-46095.  The Company
acknowledges that it is obligated to keep such Registration  Statement effective
and to keep such  shares  registered  until the earlier of (i) the date on which
all of such shares have been sold,  or (ii) the date on which such shares may be
immediately  sold  without  registration  pursuant to Rule 144(k) under the 1933
Act.


                  6.  CONDITIONS  TO  THE  COMPANY'S  OBLIGATION  TO  SELL.  The
obligation  of the Company  hereunder to exchange the Series A Preferred  Shares
for the Series B Preferred Shares, to amend the Series A Warrants by issuance of
the Amended  Warrants  and to issue the  Additional  Warrants to a Holder at the
Closing is subject to the satisfaction, at or before the Closing Date of each of
the following  conditions  thereto,  provided that these  conditions are for the
Company's  sole benefit and may be waived by the Company at any time in its sole
discretion:

                           a. The  applicable  Holder shall have  executed  this
Agreement and delivered the same to the Company.

                           b. The applicable  Holder shall have delivered Series
A Preferred Shares and Series A Warrants in accordance with Section 1 above.

                           c. The Series B Certificate of Designation shall have
been accepted for filing with the Secretary of State of the State of New Jersey.

                           d.  The   representations   and   warranties  of  the
applicable  Holder shall be true and correct in all material  respects as of the
date when made and as of the Closing  Date as though  made at that time  (except
for  representations  and warranties that speak as of a specific date),  and the
applicable  Holder shall have performed,  satisfied and complied in all material
respects  with  the  covenants,  agreements  and  conditions  required  by  this
Agreement to be performed,  satisfied or complied with by the applicable  Holder
at or prior to the Closing Date.

                           e.  No   litigation,   statute,   rule,   regulation,
executive order, decree, ruling or injunction shall have been enacted,  entered,
promulgated  or  endorsed  by or in  any  court  or  governmental  authority  of
competent jurisdiction or any self-regulatory organization having authority over
the matters  contemplated  hereby which prohibits the consummation of any of the
transactions contemplated by this Agreement.

                  7.  CONDITIONS  TO EACH HOLDER'S  OBLIGATION TO PURCHASE.  The
obligation  of each Holder  hereunder to exchange the Series A Preferred  Shares
for the Series B Preferred Shares, and to exchange the Series A Warrants for the
Amended Warrants at the Closing is subject to the satisfaction, at or before the
Closing Date of each of the following conditions, provided that these conditions
are for such  Holder's sole benefit and may be waived by such Holder at any time
in its sole discretion:

                           a. The Company shall have executed this Agreement and
delivered the same to the Holder.

                           b. The Company  shall have  delivered  to such Holder
duly executed  certificates (in such  denominations as the Holder shall request)
representing  the Series B Preferred  Shares,  Additional  Warrants  and Amended
Warrants in accordance with Section 1 above.

                           c. The Series B Certificate of Designation shall have
been accepted for filing with the Secretary of State of the State of New Jersey,
and a copy  thereof  certified  by such  Secretary  of  State  shall  have  been
delivered to such Holder.

                           d. The Irrevocable  Transfer Agent  Instructions  (as
defined in the Purchase  Agreement),  in form and  substance  satisfactory  to a
majority-in-interest   of  the  Holders,   shall  have  been  delivered  to  and
acknowledged in writing by the Company's transfer agent.

                           e. The  representations and warranties of the Company
set forth in this Agreement  shall be true and correct in all material  respects
as of the date when made and as of the Closing  Date as though made at such time
and the Company  shall have  performed,  satisfied  and complied in all material
respects  with  the  covenants,  agreements  and  conditions  required  by  this
Agreement to be performed  (including those incorporated  herein by reference to
the Purchase  Agreement),  satisfied or complied with by the Company at or prior
to the Closing Date. The representations and warranties of the Company set forth
in Sections 3.3, 3.6, 3.7, 3.8, 3.11,  3.15,  3.16,  3.17,  3.18, 3.19, 3.20 and
3.21 of the  Purchase  Agreement  shall  be true  and  correct  in all  material
respects  as of the  Closing  Date as  though  made at such  time  and  shall be
applicable as if the terms "Securities", "Preferred Shares", "Warrants", "Common
Shares" and "Warrant  Shares" set forth in the Purchase  Agreement are deemed to
include the Securities,  Series B Preferred Shares, Warrants,  Common Shares and
Warrant Shares,  respectively and any references to "Agreement" in such sections
shall be deemed to mean  this  Agreement.  References  in such  sections  of the
Purchase  Agreement to "SEC Documents" shall be deemed to refer to reports filed
by the Company with the  Securities  and Exchange  Commission  after  January 1,
1998. The Holder shall have received a certificate or certificates,  executed by
the chief executive officer of the Company, dated as of the Closing Date, to the
foregoing effect and as to such other matters as may be reasonably  requested by
such Holder  including,  but not  limited to  certificates  with  respect to the
Company's  Certificate  of  Incorporation,   By-laws  and  Board  of  Directors'
resolutions relating to the transactions contemplated hereby.

                           f.  No   litigation,   statute,   rule,   regulation,
executive order, decree, ruling or injunction shall have been enacted,  entered,
promulgated  or  endorsed  by or in  any  court  or  governmental  authority  of
competent jurisdiction or any self-regulatory organization having authority over
the matters  contemplated  hereby which prohibits the consummation of any of the
transactions contemplated by this Agreement.

                           g. The Conversion Shares and the Warrant Shares shall
have been  authorized for quotation on Nasdaq and trading in the Common Stock on
Nasdaq shall not have been suspended by the SEC or Nasdaq.

                           h. The Holder  shall have  received an opinion of the
Company's  counsel,  dated as of the Closing Date, in form,  scope and substance
reasonably  satisfactory  to the  Holder and in  substantially  the same form as
Exhibit "D" attached hereto.

                           i. The  Registration  Statement  filed by the Company
pursuant  to  Article  V  covering  the  resale  of the  Registrable  Securities
underlying the Series B Preferred Shares and the Warrants shall be effective and
no stop order shall have been issued in respect thereof.

                           j. The Holders of $10,000,000 of the Company's  9.01%
Convertible  Subordinated  Debentures  (the  "Debentures")  have  exchanged  the
Debentures for Two Million Five Hundred  Thousand  (2,500,000)  shares of Common
Stock,  or shall  have  executed  and  delivered  to the  Company  an  effective
irrevocable  direction  for such  exchange  effective  upon the  exchange of the
Series A Preferred Shares for the Series B Preferred Shares, and the exchange of
the Series A Warrants for the Amended Warrants.

                  8.       GOVERNING LAW; MISCELLANEOUS.

                           a. Governing Law. This Agreement shall be governed by
and  interpreted  in  accordance  with the laws of the State of New York without
regard to the  principles of conflict of laws.  The parties hereto hereby submit
to the exclusive  jurisdiction  of the United States  Federal  Courts located in
Borough  of  Manhattan  in the State of New York  with  respect  to any  dispute
arising under this Agreement, the agreements entered into in connection herewith
or the transactions contemplated hereby or thereby.

                           b.  Counterparts;   Signatures  by  Facsimile.   This
Agreement  may be  executed in one or more  counterparts,  all of which shall be
considered  one  and  the  same  agreement  and  shall  become   effective  when
counterparts  have been signed by each party and  delivered  to the other party.
This  Agreement,  once executed by a party,  may be delivered to the other party
hereto  by  facsimile  transmission  of a copy of  this  Agreement  bearing  the
signature of the party so delivering this Agreement.

                           c.  Headings.  The headings of this Agreement are for
convenience   of   reference   and  shall  not  form  part  of,  or  affect  the
interpretation of, this Agreement.

                           d.  Severability.  If any provision of this Agreement
shall be  invalid or  unenforceable  in any  jurisdiction,  such  invalidity  or
unenforceability  shall  not  affect  the  validity  or  enforceability  of  the
remainder of this Agreement or the validity or  enforceability of this Agreement
in any other jurisdiction.

                           e. Consents to Transaction. Subject to the Closing of
the transactions  contemplated by this Agreement, the Holders consent to (i) the
creation,  establishment  and  issuance  of the  Series B  Preferred  Shares  in
accordance  with the  terms  hereof;  (ii) the  exchange  or  conversion  of the
Debentures for Two Million Five Hundred  Thousand  (2,500,000)  shares of Common
Stock; (iii) the issuance of options to purchase Common Stock in accordance with
the 1998 Stock Option and Stock Award Plan,  Employee  Stock  Purchase  Plan and
1998  Director's  Stock Award Plan of the Company as amended and approved by the
shareholders  of the Company,  and the issuance of Common Stock upon exercise of
such options.

                           f. Entire Agreement;  Amendments.  This Agreement and
the  instruments  referenced  herein  contain  the entire  understanding  of the
parties with respect to the matters  covered  herein and therein and,  except as
specifically  set forth  herein or  therein,  neither the Company nor the Holder
makes any representation, warranty, covenant or undertaking with respect to such
matters.  No provision of this  Agreement may be waived or amended other than by
an instrument in writing signed by the party to be charged with enforcement.

                           g. Notices.  Any notices  required or permitted to be
given under the terms of this Agreement shall be sent by certified or registered
mail (return receipt requested) or delivered personally or by courier (including
a recognized  overnight delivery service) or by facsimile and shall be effective
five days after being  placed in the mail,  if mailed by regular  United  States
mail,  or upon  receipt,  if  delivered  personally  or by courier  (including a
recognized  overnight delivery service) or by facsimile,  in each case addressed
to a party. The addresses for such communications shall be:

                           If to the Company:

                                    Base Ten Systems, Inc.
                                    One Electronics Drive
                                    Trenton, New Jersey  08619
                                    Attention:  Chief Executive Officer
                                    Facsimile: (609) 586-1593

                           With copy to:

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

         If to a  Holder:  To the  address  set  forth  immediately  below  such
Holder's name on the signature pages hereto.

         Each party shall  provide  notice to the other parties of any change in
address.

                           h.  Successors and Assigns.  This Agreement  shall be
binding  upon and inure to the benefit of the parties and their  successors  and
assigns.  Neither the Company nor any Holder shall assign this  Agreement or any
rights or obligations  hereunder without the prior written consent of the other.
Notwithstanding the foregoing, subject to Section 2.6 of the Purchase Agreement,
any  Holder  may  assign its  rights  hereunder  to any  person  that  purchases
Securities in a private transaction from a Holder or to any of its "affiliates,"
as that term is defined under the 1934 Act, without the consent of the Company.

                           i.  Third  Party  Beneficiaries.  This  Agreement  is
intended for the benefit of the parties  hereto and their  respective  permitted
successors  and  assigns,  and is not for the benefit of, nor may any  provision
hereof be enforced by, any other person.

                           j. Survival.  The  representations  and warranties of
the Company and the agreements and covenants set forth in Sections 3, 4, 5 and 8
(including  the covenants  integrated  from the Purchase  Agreement  pursuant to
Section  4(f)  of  this   Agreement)   shall   survive  the  closing   hereunder
notwithstanding any due diligence investigation conducted by or on behalf of the
Holders.  The Company  agrees to indemnify and hold harmless each of the Holders
and all their  officers,  directors,  employees  and  agents  for loss or damage
arising as a result of or related to any breach or alleged breach by the Company
of any of its representations, warranties and covenants set forth in Sections 3,
4 and 5 hereof (including the covenants  integrated from the Purchase  Agreement
pursuant  to  Section  4(f)  of  this  Agreement)  or any of its  covenants  and
obligations under this Agreement or the Registration Rights Agreement, including
advancement of expenses as they are incurred.

                           k.  Publicity.  The  Company  and each of the Holders
shall have the right to review a  reasonable  period of time before  issuance of
any press releases,  SEC, NASDAQ or NASD filings, or any other public statements
with respect to the transactions  contemplated hereby;  provided,  however, that
the  Company  shall be  entitled,  without  the  prior  approval  of each of the
Holders,  to make any press release or SEC,  NASDAQ or NASD filings with respect
to such transactions as is required by applicable law and regulations  (although
each of the Holders  shall be  consulted by the Company in  connection  with any
such  press  release  prior to its  release  and shall be  provided  with a copy
thereof and be given an opportunity to comment thereon).

                           l.  Further  Assurances.  Each  party  shall  do  and
perform,  or cause to be done and  performed,  all such further acts and things,
and  shall  execute  and  deliver  all  such  other  agreements,   certificates,
instruments and documents, as the other party may reasonably request in order to
carry out the intent and  accomplish  the  purposes  of this  Agreement  and the
consummation of the transactions contemplated hereby.

                           m. No Strict Construction.  The language used in this
Agreement  will be deemed to be the  language  chosen by the  parties to express
their mutual intent, and no rules of strict construction will be applied against
any party.




                  IN WITNESS  WHEREOF,  the undersigned  Holders and the Company
have  caused  this  Agreement  to be duly  executed  as of the date first  above
written.


BASE TEN SYSTEMS, INC.

          THOMAS E. GARDNER
By:-------------------------------------------
   Name:  Thomas E. Gardner
   Title: Chairman and Chief Executive Officer






                                                             Number of
                                                             Series A
                                                             Preferred
                                                             Shares held by
                                                             Holder.
ELARA LTD.

By:      GEOFFREY TIRMAN                                      540.046875
    --------------------------------
         Geoffrey Tirman
         Talisman Capital
         President, Elara Ltd.

JMG CAPITAL PARTNERS,
  LP.

By:      JONATHAN GLASER                                      413.4453125
    --------------------------------
         Jonathan Glaser
         President,
         JMG Capital
          Management, Inc.
         General Partner
         JMG Capital Partners,
         L.P.

TRITON CAPITAL INVESTMENTS, LTD.

         JONATHAN GLASER
By:                                                           413.4453125
    --------------------------------
         Jonathan Glaser


RGC INTERNATIONAL
INVESTORS, LDC


By:      Rose Glen Capital
         Management, L.P.,
         Investment Manager


By:      RGC General Partner Corp.,
         as General Partner

         GARY S. KAMINSKY
    --------------------------------
By:      Gary S. Kaminsky                                        3,307.5625
         Managing Director






                                                             Number of
                                                             Series A
                                                             Preferred
                                                             Shares held by
                                                             Holder.


SHEPHERD INVESTMENTS
 INTERNATIONAL, LTD.

         MICHAEL A. ROTH 
By: --------------------------------                          2,964.1171875
         Name:  Michael A. Roth
         Managing Member,
         Staro Asset
          Management, LLC
         Investment Manager
         Shepherd Investments
          International, Ltd.


STARK INTERNATIONAL

         MICHAEL A. ROTH
By: --------------------------------                          2,964.1171875
         Name:  Michael A. Roth
         Managing Member,
         Staro Asset
          Management, LLC
         Investment Manager,
         Stark International

SOCIETE GENERALE

         FRANCOIS BARTHELEMY
By: --------------------------------
         Francois Barthelemy
         FVP

         GUILLAUME POLLET
By: --------------------------------                          3,975
         Guillaume Pollet
         FVP