PURCHASE AGREEMENT dated as of September 22, 1995 by and
          among PENRIL DATACOMM NETWORKS, INC., a Delaware corporation (the
          "Company"), PEQUOT PARTNERS FUND, L.P., a Delaware limited
          partnership ("Partners"), PEQUOT ENDOWMENT FUND, L.P., a Delaware
          limited partnership ("Endowment"), and PEQUOT INTERNATIONAL FUND
          INC., a British Virgin Islands corporation ("International" and
          together with Partners and Endowment, the "Investors").

                                W I T N E S S E T H :

               WHEREAS, the Company wishes to issue to the Investors and
          the Investors wish to purchase from the Company an aggregate of
          1,465,000 shares of common stock, $.01 par value (the "Common
          Stock"), of the Company;

                    NOW, THEREFORE, in consideration of the mutual
          covenants and agreements herein contained, the parties hereto
          agree as follows:

               1.   Issuance and Sale of Common Stock.

                    1.1. Issuance, Purchase and Sale of Shares.  Upon the
               terms and subject to the conditions hereof, the Company has
               authorized the issuance of 1,465,000 shares of Common Stock
               (the "Shares").

                    1.2. Agreement to Sell and Purchase the Common Stock. 
               Upon the terms and subject to the conditions hereof,
               simultaneously with the execution and delivery of this
               Agreement, the Company is issuing and selling to each
               Investor, and each Investor is subscribing for and
               purchasing from the Company, the number of Shares set forth
               opposite such Investor's name on Schedule I hereto for an
               aggregate purchase price equal to the dollar amount opposite
               such Investor's name on Schedule I hereto (the "Purchase
               Price").

                    1.3. Deliveries.  Simultaneously with the execution and
               delivery of this Agreement, the following actions are being
               taken:

                         (a)  The Company is issuing and delivering to each
                    Investor one or more certificates representing the
                    number of Shares set forth opposite such Investor's
                    name on Schedule I hereto, each registered in the name
                    of such Investor (the "Stock Certificates").  Delivery
                    of each such Stock Certificate to each Investor is
                    being made against payment to the Company by each
                    Investor of the Purchase Price, which is being paid by
                    delivery of a certified check or cashier's check
                    payable to the order of the Company or by a wire
                    transfer in such amount to an account previously
                    designated by the Company.

                         (b)  A registration rights agreement (the
                    "Registration Rights Agreement") between the Company
                    and the Investors, in the form of Exhibit A hereto, is
                    being executed and delivered by each of the Company and
                    the Investors.

                         (c)  The Company is delivering to the Investors
                    (i) long form and bring down certificates of good
                    standing for the Company for the states of Delaware and
                    Maryland; (ii) resolutions of the Board of Directors in
                    form and substance satisfactory to the Investors
                    authorizing the execution, delivery and performance of
                    this Agreement, the Registration Rights Agreement and
                    the transactions contemplated hereby and thereby,
                    including, without limitation, the issuance of the
                    Shares; (iii) the by-laws of the Company; and (iv) an
                    incumbency certificate; in each case certified by the
                    Secretary of the Company as of the Closing Date, which
                    certification shall be satisfactory in form and
                    substance to the Investors and shall state that the
                    resolutions of the Board of Directors and the by-laws
                    certified thereby are in full force and effect and have
                    not been amended, modified, revoked or rescinded.

                         (d)  The Company is causing to be delivered to the
                    Investors an opinion from Benesch, Friedlander, Coplan
                    & Aronoff, addressed to the Investors, dated as of the
                    date hereof, as to the matters set forth in Exhibit B
                    hereto.

                    1.4. The Closing.  The closing (the "Closing")
               hereunder with respect to the transactions contemplated
               hereby is taking place simultaneously with the execution and
               delivery of this Agreement at the offices of Fried, Frank,
               Harris, Shriver & Jacobson, One New York Plaza, New York,
               New York 10004.

               2.   Representations and Warranties of the Company.  The
          Company hereby represents and warrants to each Investor as
          follows:

                    2.1. Organization and Good Standing; Power and
               Authority; Qualifications.  The Company is a corporation
               duly organized, validly existing and in good standing under
               the laws of the State of Delaware and has all requisite
               corporate power and authority to (i) own or lease and
               operate its properties and to carry on its business as
               presently conducted and as currently proposed to be
               conducted and (ii) execute and deliver and perform this
               Agreement and the Registration Rights Agreement and to issue
               and sell the Shares to the Investors.  Each of the Company
               and its Subsidiaries (as hereinafter defined) is qualified
               as a foreign corporation in, and is in good standing under
               the laws of, each jurisdiction where the character of the
               property owned or leased or the nature of the activities
               conducted by the Company or such Subsidiary makes such
               qualification necessary and in which the failure to so
               qualify would have a material adverse effect on the
               business, financial position, results of operations,
               properties or prospects of the Company and its Subsidiaries
               taken as a whole (a "Company Material Adverse Effect").

                    2.2. Subsidiaries.  Schedule 2.2. contains a true and
               complete list of each corporation, partnership, joint
               venture, business trust or other entity in which the
               Company, directly or indirectly, has any ownership interest
               (collectively, the "Subsidiaries").  Each of the outstanding
               shares of capital stock of each of the Subsidiaries is duly
               authorized, validly issued, fully paid and nonassessable,
               and, except as set forth on Schedule 2.2, is owned, directly
               or indirectly, by the Company free and clear of any liens,
               pledges, security interests, claims or other encumbrances
               other than liens imposed by law which are not material to
               the business of the Company and its Subsidiaries taken as a
               whole.  Each of the Company's Subsidiaries is a corporation
               duly organized, validly existing and in good standing under
               the laws of the jurisdiction of its incorporation. 
               Schedule 2.2 sets forth the following information for each
               Subsidiary of the Company:  (i) its name and jurisdiction of
               incorporation or organization; (ii) its authorized capital
               stock or equity capital; and (iii) the number of issued and
               outstanding shares of capital stock or equity capital. 
               Except for the interests in the Subsidiaries, neither the
               Company nor any of its Subsidiaries owns directly or
               indirectly any interest or investment (whether equity or
               debt) in any corporation, partnership, joint venture,
               business trust or other entity.

                    2.3. Authorization; Enforceable Obligations.  The
               execution, delivery and performance by the Company of this
               Agreement and the Registration Rights Agreement and the
               issuance, sale, and delivery of the Shares have been duly
               authorized by all requisite corporate action by the Company. 
               Each of this Agreement and the Registration Rights Agreement
               constitutes a valid and binding obligation of the Company,
               enforceable against the Company in accordance with its
               terms.  Upon payment by the Investors pursuant to this
               Agreement, the Shares will be validly issued and
               outstanding, fully paid and nonassessable with no personal
               liability attaching to the ownership thereof, and are not
               subject to preemptive or any other similar rights of the
               stockholders of the Company or others except as contemplated
               hereby.

                    2.4  No Violation.  The execution, delivery and
               performance of this Agreement and the Registration Rights
               Agreement, the issuance, sale, delivery of the Shares, the
               consummation of the transactions contemplated hereby and
               thereby, and compliance with the provisions hereof and
               thereof by the Company will not (a) violate any provision of
               any law, statute, rule or regulation, or any ruling, writ,
               injunction, order, judgment or decree of any court,
               administrative agency or other governmental body applicable
               to the Company or any of its Subsidiaries, properties or
               assets or (b) conflict with or result in any breach of any
               of the terms, conditions or provisions of, or constitute
               (with due notice or lapse of time, or both) a default (or
               give rise to any right of termination, cancellation or
               acceleration) under the Certificate of Incorporation or the
               By-laws of the Company or any of its Subsidiaries or any
               note, indenture, mortgage, lease agreement or other material
               contract, agreement or instrument to which the Company or
               any of its Subsidiaries is a party or by which any of them
               or any of their properties is bound or affected.  No permit,
               authorization, consent or approval of or by, or any
               notification of, or filing with, any person (governmental or
               private) is required in connection with the execution,
               delivery and performance by the Company of this Agreement or
               the Registration Rights Agreement or the issuance, sale or
               delivery of the Shares (other than such notifications or
               filings required under applicable state securities laws, if
               any, which shall be made on a timely basis).

                    2.5. Capitalization.  As of the date hereof, and
               immediately prior to the consummation of the transactions
               contemplated hereby and before giving effect to such
               transactions, the authorized capital stock of the Company
               consists of 100,000 shares of Serial Preferred Stock, $.01
               par value, none of which is issued and outstanding, and
               20,000,000 shares of Common Stock, of which 7,586,202 shares
               are issued and outstanding (exclusive of treasury stock). 
               As of the date hereof, other than options to purchase an
               aggregate of 1,599,618 shares of Common Stock outstanding
               under the Company's 1986 Incentive Plan, adopted on
               October 8, 1986, and the Non-Employee Directors' Stock
               Option Plan, adopted on December 9, 1987, and except as
               contemplated by this Agreement, there are no outstanding
               warrants, options, agreements, convertible securities or
               other commitments pursuant to which the Company is or may
               become obligated to issue any shares of the capital stock or
               other securities of the Company, except for the proposed
               sale (the "Proposed Sale") of 50,000 shares of Common Stock
               to a third party investor on or prior to October 15, 1995 at
               a per share price of not less than $5.00.  As of the date
               hereof, except as contemplated by this Agreement and the
               Registration Rights Agreement, there are, no preemptive or
               similar rights to purchase or otherwise acquire shares of
               the capital stock of the Company pursuant to any provision
               of law, the Certificate of Incorporation or By-laws (in each
               case, as amended and in effect on the date hereof), or any
               agreement to which the Company is a party; and, except as
               contemplated by this Agreement and the Registration Rights
               Agreement, the Company is not a party to any agreement,
               restriction or encumbrance (such as a right of first
               refusal, right of first offer, proxy, voting agreement,
               voting trust, registration rights agreement, stockholders'
               agreement, etc.) with respect to the sale or voting of any
               shares of capital stock of the Company (whether outstanding
               or issuable upon conversion or exercise of outstanding
               securities).  The transactions contemplated by this
               Agreement and the Registration Rights Agreement will not
               cause any anti-dilution protection provisions given by the
               Company to any person or entity (including without
               limitation, any stockholder, lender, warrant holder, lessor
               and/or licensee) to become operative.

                    2.6. SEC Documents.  The Company has filed all
               registration statements, reports, proxy statements or
               information statements (collectively, the "SEC Reports")
               required to be filed by the Company with the Securities and
               Exchange Commission (the "SEC") since July 31, 1992.  Except
               as set forth on Schedule 2.6, as of their respective dates,
               each SEC Report (including exhibits and any amendments
               thereto), filed by the Company with the SEC, (i) was
               prepared in all material respects in accordance with the
               applicable requirements of the Securities Act of 1933 (the
               "Securities Act") or the Securities Exchange Act of 1934
               (the "Securities Exchange Act"), as the case may be, and the
               respective rules and regulations promulgated thereunder and
               (ii) 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
               the light of the circumstances under which they were made,
               not misleading.  Each of the consolidated balance sheets of
               the Company included in or incorporated by reference into
               the SEC Reports (including the related notes and schedules)
               fairly presents the consolidated financial position of the
               Company and its Subsidiaries as of its date and each of the
               consolidated statements of income, retained earnings and
               cash flows of the Company included in or incorporated by
               reference into the SEC Reports (including any related notes
               and schedules) fairly presents the results of operations,
               retained earnings or cash flows, as the case may be, of the
               Company and its Subsidiaries for the periods set forth
               therein (subject, in the case of unaudited statements, to
               normal year-end audit adjustments), in each case in
               accordance with generally accepted accounting principles
               consistently applied during the periods involved, except as
               noted therein.  As of the date hereof, the Company is
               eligible to file registration statements under the
               Securities Act on Form S-3 and the Company is not aware of
               any facts or circumstances which would cause it to fail to
               meet the eligibility requirements for use of Form S-3.

                    2.7  Projections.  Each of (i) the detailed monthly
               financial forecast in the form of an income statement and a
               balance sheet for each of the Company, Electro-Metrics,
               Inc., Technipower, Inc. and Perfect Power Systems, Inc. for
               the fiscal year ending July 31, 1996 and (ii) the Forecast
               Income Statements for the Company and the Penril Datability
               Networks Division for the fiscal years ending on July 31,
               1995 through 1998, (collectively, the "Projections")
               delivered to the Investors, discloses all material
               assumptions made with respect to general economic, financial
               and market conditions used in formulating such Projections. 
               To the knowledge of the Company, no facts exist which would
               result in any material change in any of such Projections. 
               The Projections are based upon reasonable estimates and
               assumptions, all of which are fair in light of current
               conditions, have been prepared on the basis of the
               assumptions stated therein, and reflect the reasonable
               estimate of the Company of the results of operations,
               assets, liabilities and other information projected therein.

                    2.8. Litigation; Undisclosed Liabilities.

                         (a)  Except as disclosed in the SEC Reports, there
                    are no actions, suits or proceedings pending against
                    the Company or any of its Subsidiaries or any of their
                    respective directors or executive officers in their
                    capacity as such or, to the best knowledge of the
                    Company, threatened against the Company or any of its
                    Subsidiaries or any of their respective directors or
                    executive officers, at law or in equity, or before or
                    by any federal or state commission, board, bureau,
                    agency or instrumentality, that, individually or in the
                    aggregate, are or could reasonably be expected to be
                    material to the Company and its Subsidiaries taken as a
                    whole.

                         (b)  Except as set forth in the Company's Annual
                    Report on Form 10-K for the fiscal year ended July 31,
                    1994 or the Company's Quarterly Report on Form 10-Q for
                    the quarter ended April 30, 1995, except for the
                    matters disclosed in the Company's news release, dated
                    September 19, 1995 and except for the treatment of
                    Technipower, Inc. as a discontinued operation, the
                    Company has no liability of any nature (matured or
                    unmatured, fixed or contingent) which has or could
                    reasonably be expected to have a Company Material
                    Adverse Effect.

                    2.9. Absence of Certain Changes.  Since April 30, 1995
               the Company has conducted its business only in the ordinary
               course consistent with past practice and there has not been
               (a) except for the matters disclosed in the Company's news
               release, dated September 19, 1995 any event or events which,
               individually or in the aggregate, have or could reasonably
               be expected to have a Company Material Adverse Effect,
               (b) any declaration, setting aside or payment of any
               dividend or other distribution with respect to its capital
               stock or any redemption or repurchase of any shares of its
               capital stock, (c) any material change in its accounting
               principles, practices or methods, (d) any asset or property
               of the Company made subject to a lien of any kind, (e) any
               waiver of any valuable right of the Company, or the
               cancellation of any material debt or claim held by the
               Company, (f) any sale, assignment or transfer of any
               tangible or intangible assets of the Company, except in the
               ordinary course of business, (g) any loan by the Company to
               any officer, director, employee, consultant or shareholder
               of the Company, or any agreement or commitment therefor
               (other than advances to such persons in the ordinary course
               of business in connection with travel and travel related
               expenses), (h) except as set forth on Schedule 2.9, any
               increase in the salaries or other compensation payable to
               any officer, director or employee of the Company or any of
               its Subsidiaries (except for normal increases in the
               ordinary course of business consistent with past practice)
               or any increase in, or addition to, other benefits to which
               any officer, director or employee may be entitled (except as
               required by the terms of plans as in effect on the date of
               this Agreement or as required by law), (i) any incurrence of
               indebtedness for borrowed money (except in the ordinary
               course of business consistent with past practice), (j) 
               except as set forth on Schedule 2.9, any amendment to,
               termination or threat of termination of any material right
               or agreement to which the Company is a party, (k) any
               material adverse change or threat of a material adverse
               change in the Company's or any of its Subsidiaries'
               relations with, or any loss or threat of loss of, any of the
               Company's important suppliers or customers or (l)  any
               material damage, destruction or loss, whether or not covered
               by insurance, adversely affecting the properties, business
               or prospects of the Company and its Subsidiaries taken as a
               whole, or any deterioration in the operating condition of
               the assets of the Company and its Subsidiaries which would
               have a Company Material Adverse Effect.

                    2.10.     Taxes.

                         (a)  Except as set forth on Schedule 2.10, the
                    Company and each of its Subsidiaries (i) have timely
                    filed all federal, state, local and foreign tax returns
                    required to be filed by any of them prior to the date
                    of this Agreement and all such returns are complete in
                    all material respects, (ii) have paid or accrued all
                    Taxes (as hereinafter defined) that may be due and
                    payable with respect to such returns and (iii) have
                    properly accrued in all material respects all Taxes for
                    such periods subsequent to the periods covered by such
                    returns.  "Taxes," for purposes of this Agreement,
                    means any taxes, assessments, duties, fees, levies,
                    imposts, deductions, withholdings, including, without
                    limitation, income, gross receipts, ad valorem, value
                    added, excise, real or personal property, asset, sales,
                    use, license, payroll, transaction, capital, net worth
                    and franchise taxes, estimated taxes, withholding,
                    employment, social security, workers compensation,
                    utility, severance, production, unemployment
                    compensation, occupation, premium, windfall profits,
                    transfer and gains taxes, or other governmental charges
                    of any nature whatsoever imposed by any government or
                    taxing authority of any country or political
                    subdivision of any country and any liabilities with
                    respect thereto, including any penalties, additions to
                    tax, fines or interest thereon, and includes any
                    liability of the Company or any of its Subsidiaries
                    arising under any tax sharing agreement to which the
                    Company or any of its Subsidiaries is or has been a
                    party.

                         (b)  As of the close of the Company's taxable year
                    ended July 31, 1994, the Company and its Subsidiaries
                    had a consolidated net operating loss carryover for
                    federal income tax purposes of not less than
                    $1,500,000.  There are no limitations pursuant to
                    Section 382 of the Code or any of the provisions of
                    Treasury Regulation Section 1502-21 on the ability of
                    the Company and its Subsidiaries to utilize the net
                    operating loss carryovers described in the preceding
                    sentence, and the ability of the Company and its
                    Subsidiaries to utilize such net operating loss
                    carryovers will not become subject to any such
                    limitation by reason of this Agreement or any of the
                    transactions contemplated hereby.

                    2.11.     Employee Benefit Plan; Labor and Employment
               Matters.

                         (a)  To the best knowledge of the Company, with
                    respect to each Company Benefit Plan (as hereinafter
                    defined) (i) the Company and each Subsidiary have
                    performed all obligations required to be performed by
                    them under each Company Benefit Plan and Employee
                    Agreement (as hereinafter defined) and neither the
                    Company nor any Subsidiary is in default under or in
                    violation of, any Company Benefit Plan; (ii) each
                    Company Benefit Plan has been established and
                    maintained in accordance with its terms and in
                    compliance with all applicable laws, statutes, orders,
                    rules and regulations, including but not limited to
                    ERISA (as hereinafter defined) and the Internal Revenue
                    Code of 1986, as amended, and any regulations
                    promulgated or proposed thereunder (collectively, the
                    "Code"); (iii) each Company Benefit Plan intended to
                    qualify under Section 401 of the Code is, and since its
                    inception has been, so qualified and a determination
                    letter has been issued by the IRS to the effect that
                    each such Company Benefit Plan is so qualified and that
                    each trust forming a part of any such Company Benefit
                    Plan is exempt from tax pursuant to Section 501(a) of
                    the Code and no circumstances exist which would
                    adversely affect this qualification or exemption and
                    (iv) no non-exempt "prohibited transaction," within the
                    meaning of Section 4975 of the Code or Section 406 of
                    ERISA, has occurred with respect to any Company Benefit
                    Plan, Employee Agreement, or against any Company
                    Benefit Plan or against the assets of any Company
                    Benefit Plan.

                         (b)  None of the Company, any Subsidiary, or any
                    ERISA Affiliate (as hereinafter defined) presently
                    sponsors, maintains, contributes to, nor is the
                    Company, any Subsidiary or any ERISA Affiliate required
                    to contribute to, nor has the Company, any Subsidiary
                    nor any ERISA Affiliate ever sponsored, maintained,
                    contributed to, or been required to contribute to, a
                    Pension Plan (as hereinafter defined).

                         (c)  Except as disclosed on Schedule 2.11(c), the
                    execution of, and the performance of the transactions
                    contemplated in, this Agreement will not (either alone
                    or upon the occurrence of any additional or subsequent
                    events) constitute an event under any Company Benefit
                    Plan, Employee Agreement, trust or loan that will or
                    may result in any payment (whether of severance pay or
                    otherwise), acceleration, forgiveness of indebtedness,
                    vesting, distribution, increase in benefits or
                    obligation to fund benefits with respect to any
                    Employee (as hereinafter defined).  No payment or
                    benefit which will or may be made by the Company, any
                    Subsidiary, any Investor or any of their respective
                    affiliates with respect to any Employee will be
                    characterized as an "excess parachute payment," within
                    the meaning of Section 280G(b)(1) of the Code.

                         (d)  No work stoppage or labor strike against the
                    Company or any Subsidiary by Employees is pending or
                    threatened.  Neither the Company nor any Subsidiary
                    (i) is involved in or threatened with any labor
                    dispute, grievance, or litigation relating to labor
                    matters involving any Employees, including, without
                    limitation, violation of any federal, state or local
                    labor, safety or employment laws (domestic or foreign),
                    charges of unfair labor practices or discrimination
                    complaints; (ii) has engaged in any unfair labor
                    practices within the meaning of the National Labor
                    Relations Act; or (iii) is presently, nor has been in
                    the past a party to, or bound by, any collective
                    bargaining agreement or union contract with respect to
                    Employees and no such agreement or contract is
                    currently being negotiated by the Seller or any of its
                    affiliates.  No Employees are currently represented by
                    any labor union for purposes of collective bargaining
                    and no activities the purpose of which is to achieve
                    such representation of all or some of such Employees
                    are threatened or ongoing.

                         (e)  None of the Employees listed on Schedule
                    2.11(e) has threatened to resign or announced his
                    resignation and, to the best knowledge of the Company,
                    no third party may assert any valid claim against the
                    Company, the Investors or any of the Designated Persons
                    (as hereinafter defined) with respect to (i) the
                    continued employment by, or association with, the
                    Company, of any of the present officers or employees of
                    or consultants to the Company (collectively, the
                    "Designated Persons") or (ii) the use, in connection
                    with any business presently conducted or proposed to be
                    conducted by the Company or any of the Designated
                    Persons of any information which the Company or any of
                    the Designated Persons would be prohibited from using
                    under any prior agreements or arrangements or any legal
                    considerations applicable to unfair competition, trade
                    secrets or proprietary information.

                         (f)  For purposes of this Agreement, the following
                    terms shall have the following meanings:  "Benefit
                    Plan" means each plan, program, policy, payroll
                    practice, contract, agreement or other arrangement
                    providing for compensation, severance, termination pay,
                    performance awards, stock or stock-related awards,
                    fringe benefits or other employee benefits of any kind,
                    including, without limitation, each "employee benefit
                    plan," within the meaning of Section 3(3) of ERISA. 
                    "Company Benefit Plan" means each Benefit Plan (other
                    than an Employee Agreement) which is now or previously
                    has been sponsored, maintained, contributed to, or
                    required to be contributed to, by the Company, any
                    Subsidiary or any ERISA Affiliate for the benefit of
                    any Employee, and pursuant to which the Company, any
                    Subsidiary or any ERISA Affiliate has or may have any
                    liability, contingent or otherwise (all of which
                    Company Benefit Plans are listed on Schedule 2.11(f)). 
                    "Employee" means each current, former, or retired
                    employee, officer, consultant, independent contractor,
                    agent or director of the Company or any Subsidiary. 
                    "Employee Agreement" means each management, employment,
                    severance, consulting, non-compete, confidentiality, or
                    similar agreement or contract between the Company or
                    any Subsidiary and any Employee pursuant to which the
                    Company or any Subsidiary has or may have any
                    liability, contingent or otherwise (all of which
                    Employee Agreements are listed on Schedule 2.11(f)). 
                    "ERISA" means the Employee Retirement Income Security
                    Act of 1974, as amended.  "ERISA Affiliate" means each
                    business or entity which is a member of a "controlled
                    group of corporations," under "common control" or an
                    "affiliated service group" with the Company within the
                    meaning of Section 414(b), (c) or (m) of the Code, or
                    required to be aggregated with the Company under
                    Section 414(o) of the Code, or is under "common
                    control" with the Company, within the meaning of
                    Section 4001(a)(14) of ERISA.  "Pension Plan" means
                    each Company Benefit Plan which is a pension plan
                    subject to Title IV of ERISA.

                    2.12.     Intellectual Property Rights.

                         (a)  The Company owns or has the right to use all
                    Intellectual Property Rights (as hereinafter defined)
                    necessary, required or desirable for the conduct of its
                    business as presently conducted or as presently
                    proposed to be conducted.  The material licenses,
                    patents, trademarks, patent applications and trade
                    names of the Company and its Subsidiaries are
                    identified on Schedule 2.12 (collectively, the
                    "Requisite Rights").

                         (b)  Except as disclosed on Schedule 2.12, to the
               knowledge of the Company no product, service or process
               manufactured, marketed, sold or used, or proposed to be
               manufactured, marketed, sold or used, by the Company
               violates, or will violate, any license or knowingly
               infringes upon, or will infringe upon, any Intellectual
               Property Rights or assumed name of another; and there is no
               pending or threatened claim or litigation against the
               Company (nor does there exist any basis therefor) contesting
               the validity of or the right to use any of the foregoing,
               nor has the Company received any notice that any of the
               Requisite Rights or the operation or proposed operation of
               the Company's business conflicts, or will conflict, with the
               asserted rights of others, nor does there exist any basis
               for any such conflict.

               As used herein, the term "Intellectual Property Rights"
          means all industrial and intellectual property rights, including,
          without limitation, Proprietary Technology (as hereinafter
          defined), patents, patent applications, patent rights,
          trademarks, trademark applications, trade names, service marks,
          service mark applications, copyrights, know-how, certificates of
          public convenience and necessity, franchises, licenses, trade
          secrets, proprietary processes and formulae.  As used herein,
          "Proprietary Technology" means all source and object code,
          algorithms, architecture, structure, display screens, layouts,
          processes, inventions, trade secrets, know-how, development tools
          and other proprietary rights owned by the Company, pertaining to
          any product or service manufactured, marketed or sold, or
          proposed to be manufactured, marketed or sold (as the case may
          be), by the Company, or used, employed or exploited in the
          development, license, sale, marketing, distribution or
          maintenance thereof, and all documentation and media
          constituting, describing or relating to the above, including,
          without limitation, manuals, memoranda, know-how, notebooks,
          patents and patent applications, trademarks and trademark
          applications, copyrights and copyright applications, records and
          disclosures.

                    2.13.     Title to Properties; Insurance.  The Company
               and its Subsidiaries have good and valid title to, or, in
               the case of property leased by any of them as lessee, a
               valid leasehold interest in, their respective properties
               (whether real, personal or mixed) and assets, free of all
               liens and encumbrances other than those referred to in the
               financial statements of the Company (or the notes thereto)
               for the fiscal year ended July 31, 1994 or the quarter ended
               April 30, 1995, included in the SEC Reports, except in each
               case for such defects in title and such other liens and
               encumbrances which are disclosed in the SEC Reports or which
               do not in the aggregate materially detract from the value to
               the Company of the properties and assets of the Company and
               its Subsidiaries taken as a whole.  The Company and its
               Subsidiaries maintain insurance in such amounts (to the
               extent available in the public market), including
               self-insurance, retainage and deductible arrangements, and
               of such a character as is reasonable for companies engaged
               in the same or similar business.

                    2.14.     No Defaults.  The Company is not in default
               (a) under its Certificate of Incorporation or By-laws,
               (b) under any indenture, mortgage, lease, purchase or sales
               order, or any other contract, agreement or instrument to
               which the Company is a party or by which the Company or any
               of its respective properties is bound or affected, which
               default or defaults would, in the aggregate, have a Company
               Material Adverse Effect or (c) with respect to any order,
               writ, injunction or decree of any court of any Federal,
               state, municipal or other domestic or foreign governmental
               department, commission, board, bureau, agency or
               instrumentality, which default or defaults would, in the
               aggregate, have a Company Material Adverse Effect.  There
               exists no condition, event or act which constitutes, or
               which after notice, lapse of time or both, would constitute,
               a default under any of the foregoing, which default would
               have a Company Material Adverse Effect.

                    2.15.     Compliance with Law.

                         (a)  Except as disclosed on Schedule 2.15, to the
                    best knowledge of the Company, the Company (i) is and
                    has been in compliance in all material respects with
                    all Federal, state, local and foreign laws, rules,
                    ordinances, codes, consents, authorizations,
                    registrations, regulations, decrees, directives,
                    judgments and orders applicable to it, its business and
                    the ownership of its assets, including, but not limited
                    to Environmental Laws (as hereinafter defined), and
                    (ii) has all Federal, state, local and foreign
                    governmental licenses, permits and qualifications
                    material to and necessary in the conduct of its
                    business, such licenses, permits and qualifications are
                    in full force and effect, and, to the best knowledge of
                    the Company, no violations have been recorded in
                    respect of any such licenses, permits and
                    qualifications, no proceeding is pending or threatened
                    to revoke or limit any such license, permit or
                    qualification and there is no reason why any such
                    license, permit or qualification would not be renewed
                    in the ordinary course.

                         (b)  For purposes of this Agreement,
                    "Environmental Laws" means, without limitation, the
                    Comprehensive Environmental Response, Compensation and
                    Liability Act, 42 U.S.C.    9601, et seq.; the
                    Emergency Planning and Community Right-to-Know Act of
                    1986, 42 U.S.C.    11001, et seq.; the Resource
                    Conservation and Recovery Act, 42 U.S.C.    6901, et
                    seq.; the Toxic Substances Control Act, 15 U.S.C.
                       2601, et seq.; the Federal Insecticide, Fungicide,
                    and Rodenticide Act, 7 U.S.C.    136, et seq.; the
                    Clean Air Act, 42 U.S.C.    7401, et seq.; the Clean
                    Water Act (Federal Water Pollution Control Act), 33
                    U.S.C.    1251, et seq.; the Safe Drinking Water Act,
                    42 U.S.C.    300f, et seq.; the Occupational Safety and
                    Health Act, 29 U.S.C.    641, et seq.; the Hazardous
                    Materials Transportation Act, 49 U.S.C.    1801, et
                    seq.; as any of the above statutes have been or may be
                    amended from time to time, all rules and regulations
                    promulgated pursuant to any of the above statutes, and
                    any other foreign, federal, state or local law,
                    statute, ordinance, rule or regulation governing
                    environmental matters, as the same have been or may be
                    amended from time to time, including any common law
                    cause of action providing any right or remedy with
                    respect to environmental matters, and all applicable
                    judicial and administrative decisions, orders, and
                    decrees relating to environmental matters.

                    2.16.     Related Party Transactions.  Except as
               disclosed in the SEC Reports or on Schedule 2.16, there are
               no contracts, arrangements or transactions in effect between
               the Company or any of its Subsidiaries, on the one hand, and
               any officer, director or 5% stockholder of the Company, or
               any affiliate or immediate family member of any of the
               foregoing persons, on the other hand.

                    2.17.     Use of Proceeds.  The net proceeds received
               by the Company from the sale of the Shares will be used by
               the Company to repay indebtedness in an aggregate amount of
               $1,500,000 and for general working capital purposes and
               expenses incurred in connection with this Agreement.
                    2.18.     Offering Exemption.  Assuming the
               representations and warranties in Section 3.3 are true and
               correct, the offering and sale of the Shares pursuant hereto
               is exempt from registration under the Securities Act and the
               aforesaid offering and sale is also exempt from registration
               under applicable state securities and "blue sky" laws.

               3.   Representations and Warranties of the Investors.  Each
          Investor represents and warrants as to itself to the Company as
          follows:

                    3.1. Organization; Power and Authority; Authorization;
               Enforceable Obligations.  The Investor is a limited
               partnership, or in the case of International, a corporation,
               duly organized, validly existing under the laws of the
               jurisdiction of its formation having all partnership or
               corporate power and authority, as the case may be, and all
               necessary licenses and permits required to carry on its
               business as now conducted and to enter into and perform this
               Agreement.  The execution, delivery and performance by the
               Investor of this Agreement and the Registration Rights
               Agreement has been duly authorized by all necessary action
               on the part of the Investor.  Each of this Agreement and the
               Registration Rights Agreement constitutes a valid and
               binding agreement of such Investor enforceable against such
               Investor in accordance with its terms.

                    3.2. No Violation.  The execution, delivery and
               performance of this Agreement and the Registration Rights
               Agreement and the consummation of the transactions
               contemplated hereby and thereby, and compliance with the
               provisions hereof and thereof by the Investor will not
               violate (a) any provision of any law, statute, rule or
               regulation, or any ruling, writ, injunction, order, judgment
               or decree of any court, administrative agency or other
               governmental body applicable to the Investor or any of its
               properties or assets or (b) conflict with or result in any
               breach of any of the terms, conditions or provisions of, or
               constitute (with due notice or lapse of time, or both) a
               default (or give rise to any right of termination,
               cancellation or acceleration) under the Investor's
               partnership agreement or any note, indenture, mortgage,
               lease agreement or other contract, agreement or instrument
               to which the Investor is a party or by which any of them or
               any of their properties is bound or affected.  No permit,
               authorization, consent or approval of or by, or any
               notification of, or filing with, any person (governmental or
               private) is required in connection with the execution,
               delivery and performance by the Investor of this Agreement
               or the Registration Rights Agreement.

               3.   Securities Act Representations.

                         (a)  The Investor is acquiring its Shares for its
                    own account, for investment and not with a view to the
                    distribution thereof within the meaning of the
                    Securities Act.  The Investor is an "Accredited
                    Investor" (as defined in Rule 501(a) under the
                    Securities Act).

                         (b)  Each Investor acknowledges and agrees that
                    the Shares have not been registered under the
                    Securities Act or the securities laws of any state and
                    that they may be sold or otherwise disposed of only in
                    one or more transactions registered under the
                    Securities Act and, where applicable, such laws or
                    transactions as to which an exemption from the
                    registration requirements of the Securities Act and,
                    where applicable, such laws are available.  Each
                    Investor acknowledges that, except as provided in the
                    Registration Rights Agreement, such Investor has no
                    right to require the Company to register the Shares. 
                    Each Investor understands and agrees that the Shares
                    are subject to stop transfer orders and each Stock
                    Certificate shall bear the following legends:

                    "THE SHARES REPRESENTED BY THIS CERTIFICATE
                    HAVE NOT BEEN REGISTERED UNDER THE SECURITIES
                    ACT OF 1933 OR THE SECURITIES LAWS OF ANY
                    STATE AND MAY NOT BE SOLD OR OTHERWISE
                    DISPOSED OF EXCEPT PURSUANT TO AN EFFECTIVE
                    REGISTRATION STATEMENT UNDER SUCH ACT AND
                    APPLICABLE STATE SECURITIES LAWS OR AN
                    APPLICABLE EXEMPTION TO THE REGISTRATION
                    REQUIREMENTS OF SUCH ACT OR SUCH LAWS."

               4.   Covenants and Agreements.

                    4.1. Board Membership.

                         (a)  The Board of Directors of the Company shall
                    take all necessary action to increase the size of the
                    Board of Directors by one and to fill the vacancy
                    created thereby by electing the person designated by
                    the following Investor (the "Designating Investor");
                    Partners, so long as it holds Shares and thereafter
                    International so long as it holds Shares and thereafter
                    Endowment; within 10 days after such designation, to
                    the Board of Directors as a Class II director and, so
                    long as any Investors hold shares of Common Stock
                    representing 10% of all shares of the Common Stock then
                    outstanding (exclusive of any treasury stock), at each
                    subsequent annual meeting for the election of directors
                    of Class II, the Designating Investor will be entitled
                    to propose (and the Board of Directors will elect to
                    fill the vacancy or the Company will nominate and
                    recommend, as the case may be) one person as a member
                    of the Company's Board of Directors; provided, that the
                    Designating Investor shall be entitled to designate
                    (and the Company will nominate and recommend) as a
                    member of the Board of Directors any person reasonably
                    acceptable to the Board of Directors of the Company. 
                    In the event of any vacancy arising by reason of the
                    resignation, death, removal (including, but not limited
                    to, a resignation pursuant to Section 4.1(c) hereof) or
                    inability to serve of the Designating Investor's
                    nominee, the Designating Investor shall be entitled,
                    subject to the foregoing proviso, to designate a
                    successor to fill such vacancy until the next annual
                    meeting for the election of Class II directors.  The
                    Company agrees that if the Designating Investor's
                    nominee is not elected, the Designating Investor will
                    be entitled to have one observer selected by the
                    Designating Investor present at all meetings of the
                    Board of Directors and such observer shall have the
                    same access to information concerning the business and
                    operations of the Company and its Subsidiaries and at
                    the same time as directors of the Company and shall be
                    entitled to participate in discussions and consult with
                    the Board of Directors, without voting.

                         (b)  Without the prior consent of the Investors,
                    the Company shall not change the size of the Board of
                    Directors, the classification of any director or
                    otherwise change or modify Article Seventh of the
                    Company's Certificate of Incorporation or Sections 2 or
                    3 of the Company's By-laws.

                         (c)  The Designating Investor shall use its best
                    efforts to cause their designee to provide to the
                    Company in connection with disclosures required in
                    filings with the SEC such information as is required by
                    Items 401 through 405 of Regulation S-K or any
                    successor or new rule or regulation promulgated by the
                    SEC with respect to the disclosure of information
                    relating to directors.  If, notwithstanding the
                    Designating Investor's best efforts, the Designating
                    Investor's designee fails to provide such information,
                    subject to applicable law, the Designating Investor
                    shall cause such designee to resign from the Board of
                    Directors and the Designating Investor shall not be
                    entitled to designate such designee as a member of the
                    Board of Directors, but shall continue to be entitled
                    to designate another person (subject to the provisions
                    of Section 4.1(a)) as a member of the Board of
                    Directors.

                         (d)  All rights and obligations pursuant to this
                    Section 4.1 terminate when the Investors collectively
                    own in the aggregate less than ten percent of the
                    issued and outstanding Common Stock (exclusive of any
                    treasury stock) or any Investor fails to comply with
                    the terms of this Agreement.

                    4.2. Right of First Offer.

                         (a)  Except for (i) shares of Common Stock issued
                    or sold to employees or directors of the Company
                    pursuant to an existing Benefit Plan or any new Benefit
                    Plan adopted by the Company in good faith, (ii) the
                    Proposed Sale, (iii) a public offering of Common Stock
                    by the Company or (iv) the issuance or transfer of
                    shares of Common Stock to unaffiliated third parties in
                    connection with licensing or similar arrangements
                    consistent with past practice, in the event that the
                    Company proposes to issue or sell any shares of Common
                    Stock or securities convertible into or exercisable for
                    shares of Common Stock and the purchase price for such
                    shares of Common Stock, or the conversion price or
                    exercise price for the shares of Common Stock into
                    which such securities are convertible or for which such
                    securities are exercisable, as the case may be, shall
                    be less than the Market Value (as hereinafter defined)
                    on the date notice is given pursuant to clause (i)
                    below:

                           (i)     the Company shall give each of the
                         Investors written notice of its intent to issue or
                         sell such shares of Common Stock or other
                         securities, specifying the number thereof to be
                         sold, the purchase price and the terms and
                         conditions of such sale and offering;

                          (ii)     if, within 5 Business Days (as
                         hereinafter defined) after receipt of the notice
                         given pursuant to clause (i) above one or more
                         Investors shall not have accepted such offer in
                         writing with respect to any shares of Common Stock
                         or other securities specified in such notice, then
                         the Company shall be free to issue or sell to any
                         third party such shares of Common Stock or other
                         securities with respect to which such offer has
                         not been accepted at a price equal to or above the
                         purchase price and on other terms and conditions
                         no less favorable to the Company than those
                         specified in such notice at any time within 45
                         days of the expiration of such 5-Business Day
                         period; provided that if such shares of Common
                         Stock shall be sold to an officer, director or an
                         affiliate of the Company, either (x) the material
                         facts as to such officer's, director's or
                         affiliate's relationship and as to the sale of
                         Common Stock are disclosed or are known to the
                         Board of Directors, and the Board of Directors in
                         good faith authorizes the sale by the affirmative
                         votes of a majority of the disinterested
                         directors, even though the disinterested directors
                         be less than a quorum, or (y) the material facts
                         as to such officer's, director's or affiliate's
                         relationship and as to the sale of Common Stock
                         are disclosed or are known to the shareholders
                         entitled to vote thereon, and the sale is
                         specifically approved in good faith by vote of the
                         shareholders, or (z) the sale of Common Stock is
                         fair to the Company as of the time it is
                         authorized, approved or ratified, by the Board of
                         Directors or the shareholders;

                         (iii)     if the Company shall not have
                         consummated such issuance or sale within the 45-
                         day period referred to in clause (ii) above, then
                         the Company may not thereafter sell such Shares or
                         other securities without complying again with the
                         provisions of this Section 4.2; and

                          (iv)     if one or more Investors shall have
                         accepted such offer in whole or in part within 5
                         Business Days after receipt of the notice given
                         pursuant to clause (i) above, then such Investor
                         or Investors shall purchase such shares of Common
                         Stock and/or other securities as to which such
                         offer has been accepted as promptly as is
                         reasonably practicable.

                         (b)  For purposes of this Section 4.2, "Market
                    Value" means (1) if the Common Stock is quoted on the
                    National Market System of the National Association of
                    Securities Dealers, Inc. Automated Quotation System
                    (the "National Market System") or is listed on one or
                    more stock exchanges, the average of the closing sales
                    prices of a share of Common Stock on the National
                    Market System if quoted thereon or on the primary
                    national or regional stock exchange on which such
                    shares are listed or (2) if the Common Stock is not so
                    quoted or listed but is traded in the over-the-counter
                    market (other than the National Market System), the
                    average of the closing bid and asked prices of a share
                    of Common Stock, in the case of clauses (1) and (2),
                    for the 20 trading days (or such lesser number of
                    trading days as the Common Stock shall have been so
                    listed, quoted or traded) next preceding the date of
                    measurement or (3) if the Common Stock is not so quoted
                    or listed and is not traded in the over-the-counter
                    market, the fair market value of a share of Common
                    Stock shall be determined reasonably and in good faith
                    by the Board of Directors of the Company.  "Business
                    Day" means a day on which federal or state chartered
                    banking institutions located in the State of
                    Connecticut are authorized by law to close.

                         (c)  All rights and obligations pursuant to this
                    Section 4.2 terminate when the Investors collectively
                    own in the aggregate less than ten percent of the
                    issued and outstanding Common Stock (exclusive of any
                    treasury stock) or any Investor fails to comply with
                    the terms of this Agreement.

                    4.3. Use of Proceeds.  The Company shall apply the net
               proceeds from the sale of the Shares as provided in
               Section 2.17 hereof.

                    4.4. Standstill.  Subject to the continued compliance
               of the Company with the terms of this Agreement and the
               Registration Rights Agreement, so long as any obligations of
               the Company remain pursuant to this Agreement or the
               Registration Rights Agreement, until the later to occur of
               the expiration of (i) a period of 12 months from the date of
               this Agreement or (ii) the permanent waiver effected in
               compliance with Section 10.5 hereof, following the
               resignation or removal of the Investor's designee from the
               Board of Directors, of the Investors' rights under Section
               4.1 and 4.2 hereof, none of the Investors will, without the
               prior written consent of the Company's Board of Directors:

                         (a)  make, or in any way participate, directly or
                    indirectly, in any solicitation of proxies or consents
                    (as such terms are used in the rules of the SEC), or
                    seek to advise or influence any person or entity, with
                    respect to the voting of any voting securities of the
                    Company;

                         (b)  initiate or propose any stockholder proposal
                    with respect to the Company as described in Rule 14a-8
                    under the Securities Exchange Act;

                         (c)  make any public announcement with respect to,
                    or submit a proposal for, or offer of (with or without
                    conditions) any extraordinary transaction involving the
                    Company or any Subsidiary or division thereof or any of
                    their securities or assets (it being acknowledged that
                    informal discussions with the Board of Directors shall
                    not be a breach of this provision);

                         (d)  otherwise act alone or in concert with
                    others, to seek to control or influence the management,
                    Board of Directors or policies of the Company
                    (provided, however, that nothing herein shall restrict
                    the Investors from exercising their rights pursuant to
                    Section 4.1 hereof and the rights of their designee on
                    the Board of Directors under applicable law and the
                    Company's Certificate of Incorporation and By-laws); or

                         (e)  form, join or in any way participate in a
                    "group" as defined in the Securities Exchange Act, or
                    advise, assist or encourage any other person in
                    connection with any of the foregoing.

               Each Investor shall promptly advise the Company of any
          inquiry or proposal made to such Investor with respect to any of
          the foregoing.

               5.   Transfer Taxes.  The Company agrees that it will pay,
          and will hold the Investor harmless from any and all liability
          with respect to any stamp or similar taxes which may be
          determined to be payable in connection with the execution and
          delivery and performance of this Agreement or any modification,
          amendment or alteration of the terms or provisions of this
          Agreement, and that it will similarly pay and hold the Investors
          harmless from all issue taxes in respect of the issuance of the
          Shares to the Investors.

               6.   Survival of Representations, Warranties and Agreements,
          Etc.  All representations, warranties and statements contained in
          any agreement, certificate or other instrument delivered by the
          Company pursuant to this Agreement (including, but not limited to
          the Registration Rights Agreement) or in connection with the
          transactions contemplated by this Agreement shall constitute
          representations and warranties by the Company under this
          Agreement.  All representations and warranties made or deemed to
          be made hereunder by the Company or the Investors shall survive
          the Closing until the later of (i) the filing of the Company's
          Annual Report on Form 10-K for the fiscal year ended July 31,
          1995 or (ii) the expiration of a period of six months from the
          date hereof or, with respect to representations or warranties
          deemed to be made hereunder pursuant to the previous sentence,
          for such longer period, if any, for which the agreement,
          certificate or instrument wherein such representation, warranty
          or statement is made, is effective by its terms.  All agreements
          and covenants contained herein and in the Registration Rights
          Agreement shall survive indefinitely until, by their respective
          terms, they are no longer operative.  

               7.   Indemnification.

                    (a)  The Company agrees to indemnify and save harmless
               each Investor and its officers, directors, partners,
               employees and agents and each person who controls the
               Investor within the meaning of the Securities Act or the
               Securities Exchange Act, from and against any and all costs,
               expenses (including attorney's fees), damages or other
               liabilities resulting from any breach by the Company of this
               Agreement or the Registration Rights Agreement or (subject
               to Section 2.6 of the Registration Rights Agreement) any
               legal, administrative or other proceedings arising out of
               the transactions contemplated hereby (other than such costs,
               expenses, damages or other liabilities resulting, directly
               or indirectly, (i) from the breach by such Investor of any
               of its agreements contained herein or (ii) from the gross
               negligence or willful misconduct of such Investor or any of
               its officers, directors, partners, employees or agents, or
               any person who controls such Investor within the meaning of
               the Securities Act or Securities Exchange Act.

                    (b)  Each Investor severally, but not jointly, agrees
               to indemnify and save harmless the Company and its officers,
               directors, employees and agents and each person who controls
               the Company within the meaning of the Securities Act or the
               Securities Exchange Act, from and against any and all costs,
               expenses (including attorney's fees), damages or other
               liabilities resulting from any breach by such Investor of
               its representations, warranties and covenants contained in
               this Agreement or any legal, administrative or other
               proceedings arising out of the transactions contemplated
               hereby (other than such costs, expenses, damages or other
               liabilities resulting, directly or indirectly, (i) from the
               breach by the Company of any of its agreements contained
               herein or (ii) from the gross negligence or willful
               misconduct of the Company or any of its officers, directors,
               employees or agents or any person who controls the Company
               within the meaning of the Securities Act or the Securities
               Exchange Act).

                    (c)  Promptly after receipt by an indemnified party of
               notice of the commencement of any action or proceeding
               involving a claim referred to in the preceding subsections
               of this Section 7, such indemnified party shall, if a claim
               in respect thereof is to be made against an indemnifying
               party, give written notice to the latter of the commencement
               of such action or proceeding; provided, however, that the
               failure of any indemnified party to give notice as provided
               herein shall not relieve the indemnifying party of its
               obligations under the preceding subsections of this
               Section 7, except to the extent that the indemnifying party
               is actually prejudiced by such failure to give notice, and
               shall not relieve the indemnifying party from any liability
               which it may have to the indemnified party otherwise than
               under this Section 7.  In case any such action or proceeding
               is brought against an indemnified party, the indemnifying
               party shall be entitled to participate therein and, unless
               in the opinion of outside counsel to the indemnified party a
               conflict of interest between such indemnified and
               indemnifying parties may exist in respect of such claim, to
               assume the defense thereof, jointly with any other
               indemnifying party similarly notified to the extent that it
               may wish, with counsel reasonably satisfactory to such
               indemnified party; provided, however, that if the defendants
               in any such action or proceeding include both the
               indemnified party and the indemnifying party and if in the
               opinion of outside counsel to the indemnified party there
               may be legal defenses available to such indemnified party
               and/or other indemnified parties which are different from or
               in addition to those available to the indemnifying party,
               the indemnified party or parties shall have the right to
               select separate counsel to defend such action or proceeding
               on behalf of such indemnified party or parties; provided,
               however, that the indemnifying party shall be obligated to
               pay for only one counsel for all indemnified parties.  After
               notice from the indemnifying party to such indemnified party
               of its election so to assume the defense thereof and
               approval by the indemnified party of such counsel, the
               indemnifying party shall not be liable to such indemnified
               party for any legal expenses subsequently incurred by the
               latter in connection with the defense thereof other than
               reasonable costs of investigation (unless the first proviso
               in the preceding sentence shall be applicable).  No
               indemnifying party shall be liable for any settlement of any
               action or proceeding effected without its written consent. 
               No indemnifying party shall, without the consent of the
               indemnified party, consent to entry of any judgment or enter
               into any settlement which does not include as an
               unconditional term thereof the giving by the claimant or
               plaintiff to such indemnified party of a release from all
               liability in respect to such claim or litigation.

                    (d)  Contribution.  If the indemnification provided for
               in this Section 7 shall for any reason be held by a court to
               be unavailable to an indemnified party under subsection (a)
               or (b) hereof in respect of any loss, claim, damage or
               liability, or any action in respect thereof, then, in lieu
               of the amount paid or payable under subsection (a) or (b)
               hereof, the indemnified party and the indemnifying party
               under subsection (a) or (b) hereof shall contribute to the
               aggregate losses, claims, damages and liabilities (including
               legal or other expenses reasonably incurred in connection
               with investigating the same), (i) in such proportion as is
               appropriate to reflect the relative fault of the
               indemnifying party on the one hand, and the indemnified
               party on the other, which resulted in such loss, claim,
               damage or liability, or action in respect thereof, with
               respect to the statements or omissions which resulted in
               such loss, claim, damage or liability, or action in respect
               thereof, as well as any other relevant equitable
               considerations, or (ii) if the allocation provided by clause
               (i) above is not permitted by applicable law or if the
               allocation provided in this clause (ii) provides a greater
               amount to the indemnified party than clause (i) above, in
               such proportion as shall be appropriate to reflect not only
               the relative fault but also the relative benefits received
               by the indemnifying party and the indemnified party from the
               offering of the securities covered by such registration
               statement as well as any other relevant equitable
               considerations.  The parties hereto agree that it would not
               be just and equitable if contributions pursuant to this
               Section 7(c) were to be determined by pro rata allocation or
               by any other method of allocation which does not take into
               account the equitable considerations referred to in the
               preceding sentence of this Section 7(c).  No Person guilty
               of fraudulent misrepresentation (within the meaning of
               Section 11(f) of the Securities Act) shall be entitled to
               contribution from any Person who was not guilty of such
               fraudulent misrepresentation.  The Investors' obligations to
               contribute as provided in this subsection (c) are several
               and not joint and shall be in proportion to the relative
               value of the respective number of shares of Common Stock
               then held by them.  In addition, no Person shall be
               obligated to contribute hereunder any amounts in payment for
               any settlement of any action or claim effected without such
               Person's consent, which consent shall not be unreasonably
               withheld.

                    (e)  Indemnification Payments.  The indemnification and
               contribution required by this Section 7 shall be made by
               periodic payments of the amount thereof during the course of
               the investigation or defense, as and when bills are received
               or expense, loss, damage or liability is incurred; provided,
               however, that such periodic payments shall only be made upon
               delivery of an agreement to the indemnifying party by the
               indemnified party to repay the amounts advanced to the
               extent it is ultimately determined that the indemnified
               party is not entitled to indemnification pursuant to this
               Section 7 or otherwise.  The parties hereto agree that for
               each of them such agreement shall be deemed to be contained
               herein.

               8.   Specific Performance; Remedies.

                    (a)  The Investors, on the one hand, and the Company,
               on the other hand, acknowledge and agree that irreparable
               damage would occur in the event that any of the provisions
               of this Agreement were not performed in accordance with
               their specific terms or were otherwise breached.  It is
               accordingly agreed that the parties shall be entitled to an
               injunction to prevent breaches of the provisions of this
               Agreement and to enforce specifically the terms and
               provisions hereof in any court of the United States or any
               state thereof having jurisdiction, this being in addition to
               any other remedy to which they may be entitled at law or in
               equity.

                    (b)  In case any one or more of the representations,
               warranties, covenants and/or agreements set forth in this
               Agreement shall have been breached by the a party hereto,
               each of the other parties may proceed to protect and enforce
               its rights either by suit in equity and/or by action at law,
               including, but not limited to, an action for damages as a
               result of any such breach and/or an action for specific
               performance of any such covenant or agreement contained in
               this Agreement.

               9.   Expenses.  Except as otherwise provided herein, the
          Company and the Investors shall each pay all costs and expenses
          incurred by each of them or on its behalf in connection with this
          Agreement and the transactions contemplated hereby, including,
          without limiting the generality of the foregoing, fees and
          expenses of its own financial consultants, accountants and
          counsel; provided, that the Company shall pay the Investors'
          costs and expenses in connection with this Agreement in an
          aggregate amount not exceeding $20,000.

               10.  Miscellaneous.

                    10.1.     Successors and Assigns.  This Agreement shall
               bind and inure to the benefit of and be binding upon the
               Company and the Investors and the respective successors,
               assigns, heirs and personal representatives of the Company
               and the Investors.  This Agreement may not be assigned by
               the Company.  Each Investor shall be entitled to assign its
               rights under this Agreement.

                    10.2.     Transfer of Securities.  Each Investor shall
               be entitled to transfer all or any part of the Shares
               purchased by it hereunder to any person in compliance with
               the provisions of the Securities Act and the rules and
               regulations promulgated thereunder.

                    10.3.     Entire Agreement.  This Agreement and the
               Registration Rights Agreement and the other writings
               referred to herein or delivered pursuant hereto which form a
               part hereof contain the entire agreement among the parties
               with respect to the subject matter hereof and supersede all
               prior and contemporaneous arrangements or understandings
               with respect thereto.

                    10.4.     Notices.  All notices, requests, consents and
               other communications hereunder to any party shall be deemed
               to be sufficient if contained in a written instrument
               delivered in person or sent by telecopy, nationally-
               recognized overnight courier or first class registered or
               certified mail, return receipt requested, postage prepaid,
               addressed to such party at the address set forth below or
               such other address as may hereafter be designated in writing
               by such party to the other parties:

                         (a)  If to any Investor, to it at:

                              345 Pequot Avenue
                              PO Box 760
                              Southport, Connecticut  06490-0577
                              Attention:  Arthur J. Samberg
                              Telecopier:  (203) 255-2558

                              With a copy to:

                              Fried, Frank, Harris, Shriver & Jacobson
                              One New York Plaza
                              New York, New York  10004
                              Attention:  Robert C. Schwenkel, Esq.
                              Telecopier:  (212) 859-8587

                         (b)  If to the Company, to it at:

                              Penril DataComm Networks, Inc.
                              1300 Quince Orchard Boulevard
                              Gaithersburg, Maryland  20810
                              Attention:  Chairman

                              With a copy to:

                              Benesch, Friedlander, Coplan & Aronoff
                              2300 BP America Building
                              200 Public Square
                              Cleveland, Ohio  44114
                              Attention:  Richard D. Margolis, Esq.
                              Telecopier:  (216) 363-4588

          All such notices, requests, consents and other communications
          shall be deemed to have been given when received.

                    10.5.     Amendments.  The terms and provisions of this
               Agreement may not be modified or amended, or any of the
               provisions hereof waived, temporarily or permanently, except
               pursuant to the written consent of the Company and Investors
               holding a majority of the Shares then held by the Investors.

                    10.6.     Counterparts.  This Agreement may be executed
               in any number of counterparts, each of which shall be deemed
               an original, but all such counterparts shall together shall
               constitute one and the same instrument.

                    10.7.     Headings.  Headings of the Articles and
               Sections of this Agreement are for convenience only, and
               shall be given no substantive or interpretive effect
               whatsoever.

                    10.8.     Interpretation.  In this Agreement, unless
               the context otherwise requires, words describing the
               singular number shall include the plural and vice versa, and
               words denoting any gender shall include all genders and
               words denoting natural persons shall include corporations
               and partnerships and vice versa.

                    10.9.     Waivers.  Except as provided in this
               Agreement, no action taken pursuant to this Agreement,
               including, without limitation, any investigation by or on
               behalf of any party, shall be deemed to constitute a waiver
               by the party taking such action of compliance with any
               representations, warranties, covenants or agreements
               contained in this Agreement.  The waiver by any party hereto
               of a breach of any provision hereunder shall not operate or
               be construed as a waiver of any prior or subsequent breach
               of the same or any other provision hereunder.

                    10.10.    Severability.  Any term or provision of this
               Agreement which is invalid or unenforceable in any
               jurisdiction shall, as to that jurisdiction, be ineffective
               to the extent of such invalidity or unenforceability without
               rendering invalid or unenforceable the remaining terms and
               provisions of this Agreement or otherwise affecting the
               validity or enforceability of any of the terms or provisions
               of this Agreement in any other jurisdiction.  If any
               provision of this Agreement is so broad as to be
               unenforceable, the provision shall be interpreted to be only
               so broad as is enforceable.

                    10.11.    Governing Law; Jurisdiction.

                         (a)  This Agreement shall be construed and
                    enforced in accordance with and governed by the laws of
                    the State of Delaware, without giving effect to the
                    conflicts of law principles thereof.

                         (b)  Each of the parties hereto irrevocably and
                    unconditionally consents to the jurisdiction of the
                    courts of Delaware in respect of the interpretation and
                    enforcement of the provisions of this Agreement, and
                    hereby agrees that service of process in any such
                    action, suit or proceeding against the other party with
                    respect to this Agreement may be made upon it in any
                    manner permitted by the laws of Delaware or the federal
                    laws of the United States.

                    10.12.    Public Announcements.  The Company and the
               Investors shall, subject to their respective legal
               obligations (including requirements of stock exchanges and
               other similar regulatory bodies), consult with each other,
               and use reasonable efforts to agree upon the text of any
               press release, before issuing any such press release or
               otherwise making public statements with respect to the
               transactions contemplated hereby and in making any filings
               with any federal or state governmental or regulatory agency
               or with any national securities exchange with respect
               thereto.

               IN WITNESS WHEREOF, the parties hereto have duly executed
          this agreement as of the date first above written.

                                             PENRIL DATACOMM NETWORKS, INC.



                                             By:
                                             Title:



                                             PEQUOT PARTNERS FUND, L.P.


                                             By:  Pequot General Partners,
                                                its general partner

                                             By:
                                                 Managing Partner



                                             PEQUOT ENDOWMENT FUND, L.P.


                                             By:  Pequot Endowment
                                                  Partners, L.P.,
                                                Its general partner

                                             By:
                                                 Managing Partner



                                             PEQUOT INTERNATIONAL FUND INC.


                                             By:
                                             Name:
                                             Title:





                                      Schedule I

                                          to

                               Stock Purchase Agreement




                                       # Shares of           Aggregate
          Investor                     Common Stock        Purchase Price

          Pequot Partners Fund, L.P.      636,000            $3,180,000
          Pequot Endowment Fund, L.P.     260,000            $1,300,000
          Pequot International Fund Inc.  569,000            $2,845,000
                                        ---------             ---------
                       TOTAL            1,465,000            $7,325,000



          September 25, 1995 - 3:57pm - JRO
          CLE2 -  166861.1B - 03780\418