<PAGE>

                                                                  EXHIBIT 10(qq)

                               PLEDGE AGREEMENT



PLEDGE AGREEMENT ("Pledge Agreement") made as of the 16th day of June, 1997,
between Daniel F. Brown ("Pledgor"), and CompuCom Systems, Inc., a Delaware
corporation ("Secured Party").

1.   Definitions.  In addition to the terms defined elsewhere in this Pledge
     Agreement, the following terms shall have the following meanings for
     purposes of this Pledge Agreement:

     (a)  The term "Event of Default" shall have the meaning ascribed thereto in
          Section 9 of this Pledge Agreement.

     (b)  The term "Note" means and includes that certain Note, dated of even
          date herewith, in the original principal amount of $661,251.00, which
          Pledgor has executed, or is the process of executing payable to the
          order of Secured Party, together with any and all concurrent or
          subsequent extensions, amendments, or modifications thereto.

     (c)  The term "Obligations" means and includes all obligations of Pledgor
          to Secured Party pursuant to the terms of the Note and this Pledge
          Agreement.

     (d)  The term "Pledged Shares" means shares of common stock, par value $.01
          per share, of Secured Party being purchased by Pledgor with a portion
          of the proceeds of the Note pursuant to that certain Stock Option
          Agreement dated July 14, 1987 between Machine Vision International
          Corporation, a Michigan corporation and predecessor in interest of the
          Company, between Pledgor and Secured Party.

2.   Pledge.  Upon the terms hereof, Pledgor hereby pledges and grants to
     Secured Party a lien on and security interest (the "Security Interest") in
     and to all of the following instruments and property of Pledgor (all of the
     following being herein sometimes called the "Collateral"):

     (a)  The pledged shares together with all certificates,options, rights or
          other distributions issued as an addition to, in substitution or in
          exchange for, or on account of, any such shares (collectively, the
          "Stock");

     (b)  All securities and other property, rights or interests of any
          description at any time issued or issuable as an addition to, in
          substitution or exchange for, with respect

Stock Pledge Agreement - Page 1
<PAGE>

          to, incident to or in lieu of such shares described in Section 2(a)
          hereof or with respect to, incident to or in lieu of the Collateral
          (i) due to any dividend, stock-split, stock dividend or distribution
          on dissolution, on partial or total liquidation, or other corporate
          reorganization or for any other reason; (ii) in connection with a
          reduction of capital, capital surplus or paid-in surplus; or (iii) in
          connection with any spin-off, split-off, reclassification,
          readjustment, merger, consolidation, sale of assets, combination of
          shares or any other plan of distribution affecting the companies which
          have issued the shares described in Section 2(a) hereof;

     (c)  Any and all proceeds, monies, income and benefits arising from or by
          virtue of, and all dividends and distributions (cash or otherwise)
          payable and/or distributable with respect to, all or any of the shares
          or other securities and rights and interests described in clauses (a)
          through (c) of this Section 2.

3.   Obligations Secured.  This Pledge Agreement and the Security Interest
     granted hereby secure the prompt satisfaction of the Obligations.

4.   Warranties.  Pledgor represents and warrants that each of the following
     statements is true and correct: (a) Pledgor is the legal and beneficial
     owner of the Stock; (b) the Collateral is owned by Pledgor free of any
     pledge, mortgage, hypothecation, lien, charge, encumbrance or security
     interest or purchase right or option on the part of any third person in
     such Collateral, except the Security Interest; (c) Pledgor has the full
     power, authority and legal right to transfer and pledge the Collateral free
     of any encumbrances and without obtaining the consent of any other person
     or entity; and (d) upon delivery of the Collateral to Secured Party, this
     Pledge Agreement will create a valid and perfected first priority lien
     upon, and security interest in, the Collateral and the proceeds thereof,
     securing the payment of the Obligations.  The delivery at any time by
     Pledgor to Secured Party of Collateral shall constitute a representation
     and warranty by Pledgor under this Pledge Agreement that, with respect to
     the Collateral and each item thereof, Pledgor is the owner of the
     Collateral and the matters  heretofore warranted in clauses (a) through (d)
     of this Section 4 are true and correct.

5.   Covenants.  Pledgor covenants to do or not to do, as the case may be, each
     of the following; provided, however, in the case of a negative covenant,
     Pledgor will not undertake any of the proscribed activities without the
     prior written consent of Secured Party: (a) from time to time to do all
     other acts or things as Secured Party may reasonably request in order more
     fully to evidence and perfect the Security Interest; (b) after the
     occurrence of an Event of Default, to promptly pay to Secured Party the
     amount of all court costs and reasonable attorneys' fees incurred by
     Secured Party hereunder; and (c) except as otherwise provided herein, to
     promptly deliver to Secured Party, in the exact form received, all
     securities and other property described in Section 2(b) and Section 2(c)
     hereof which come into the possession, custody or control of Pledgor.
     Pledgor further

Stock Pledge Agreement - Page 2
<PAGE>

     covenants and agrees that, without the prior written consent of Secured
     Party, Pledgor shall not assign or transfer Pledgor's rights in the
     Collateral, or create any other lien or security in or otherwise encumber
     any of the Collateral, or permit any of the Collateral to ever be or become
     subject to any lien, attachment, execution, sequestration, other legal or
     equitable process, or any lien or encumbrance of any kind. Notwithstanding
     anything contained in the preceding sentence to the contrary, Pledgor shall
     be free to sell the Stock provided that Pledgor complies with all
     applicable laws in effecting such sale and in the event of any such sale
     the shares of Stock will be released from the Security Interest created
     pursuant to this Pledge Agreement upon repayment to Secured Party of the
     prorata loan amount attributable to such shares set forth in the Term Note
     (appropriately adjusted to reflect stock splits, subdivisions, combinations
     and similar transactions), in cash, for each share of Stock sold. All
     assignments and endorsements by Pledgor shall be in such form and substance
     as may be satisfactory to Secured Party. Should any covenant, duty or
     agreement of Pledgor fail to be performed in accordance with its terms
     hereunder, Secured Party may, but shall never be obligated to, perform or
     attempt to perform such covenant, duty or agreement on behalf of Pledgor,
     and any amount expended by Secured Party in such performance or attempted
     performance shall become part of the Obligations, except to the extent
     prohibited by applicable law, and Pledgor agrees to pay such amount
     promptly to Secured Party.

6.   Adjustments and Distributions Concerning Collateral. Should the Collateral,
     or any part hereof, ever be converted in any manner by its issuer into
     another type of property or any money or other proceeds ever be paid or
     delivered to Pledgor as a result of Pledgor's rights in the Collateral,
     then in any such event (except as provided in Section 7 hereof), all such
     property, money and other proceeds shall immediately be and become part of
     the Collateral, and Pledgor covenants to forthwith pay and deliver all such
     property, money or other proceeds so received to Secured Party; and, if
     Secured Party deems it necessary and so requests, to endorse properly or
     assign any and all such other proceeds to Secured Party and to deliver to
     Secured Party and all such other proceeds which require perfection by
     possession under the Uniform Commercial Code of the State of Texas or other
     appropriate jurisdiction (the "UCC").  With respect to any of such property
     of a kind requiring an additional security agreement, financing statement
     or other writing to perfect a security interest therein in favor of Secured
     Party, Pledgor will forthwith execute and deliver to Secured Party whatever
     Secured Party shall deem necessary or proper for such purpose.

7.   Cash Dividends and Voting Rights.  Unless an Event of Default has occurred
     and shall not have been waived by Secured Party, Pledgor is entitled (a) to
     exercise all voting rights with respect to the Collateral and (b) to
     receive for his own use cash dividends on the Collateral.  Upon the
     occurrence of an Event of Default, Secured Party may exercise all voting
     rights with respect to the Collateral subject to all applicable rules and
     regulations

Stock Pledge Agreement - Page 3
<PAGE>

     and may require any such cash dividends to be delivered to Secured Party as
     additional Collateral hereunder or applied toward the satisfaction of the
     Obligations.

8.   Registration of Collateral in Name of Secured Party.  Upon the occurrence
     of an Event of Default, Secured Party, at its option, may have any or all
     of the Collateral registered in its name or that of its nominee.
     Immediately and without further notice, upon the occurrence of an Event of
     Default, whether or not the Collateral has been registered in the name of
     Secured Party or its nominee, Secured Party or its nominee shall have, with
     respect to the Collateral, the right to exercise all voting rights and all
     conversion, exchange, subscription or other rights, privileges or options
     pertaining thereto including, without limitation, the right to exchange any
     or all of the Collateral upon the merger, consolidation, reorganization,
     recapitalization or other readjustment of the issuer thereof, or upon the
     exercise by such issuer of any right, privilege, or option pertaining to
     any of the Collateral, and, in connection therewith, to deliver any of the
     Collateral to any committee, depositary, transfer agent, registrar or other
     designated agency upon such terms and conditions as it may determine, all
     without liability except to account for property actually received by it;
     but Secured Party shall have no duty to exercise any of the aforesaid
     rights, privileges or options and shall not be responsible for any failure
     to do so, delay in doing so, or depreciation in the value of the Collateral
     by reason of doing so.  Thereafter, at such time as (a) all Events of
     Defaults have been cured, and (b) there exists no condition, event or act
     which, with the giving of notice or lapse of time, or both, would
     constitute an Event of Default, then the right to exercise all voting
     rights with respect to the Collateral shall revert to Pledgor.

9.   Events of Default.  The occurrence of any one or more of the following
     shall constitute an Event of Default:  (a) the failure of Pledgor to make
     timely payment of any portion of the principal or interest of the Note or
     any portion of the Obligations when due subject to any applicable cure
     periods:  (b) the failure of Pledgor to perform fully, faithfully and
     promptly any material agreements, covenants and conditions contained in
     this Pledge Agreement; (c) the levy against the Collateral, or any
     substantial part thereof, or any execution, attachment, sequestration,
     distraint warrant or other like or similar writ or the attachment to the
     Collateral of any lien other than the Security Interest; (d) the entry of a
     decree or order for relief by a court having jurisdiction in the premises
     in respect of Pledgor in an involuntary case under the United States
     bankruptcy laws, as now or hereafter constituted, or any other applicable
     federal or state bankruptcy, insolvency or other similar law, or appointing
     a receiver, liquidator, assignee, custodian, trustee, sequestrator (or
     similar official) of Pledgor or of any substantial part of Pledgor's
     property, or ordering the winding-up or liquidation of the affairs of
     Pledgor and the continuance of any such decree or order unstayed and in
     effect for a period of thirty (30) consecutive days; or (e) the
     commencement by Pledgor of a voluntary case under the United States
     bankruptcy laws, as now constituted or hereafter amended, or any other
     applicable federal or state bankruptcy, insolvency or other similar law, or
     the consent, by

Stock Pledge Agreement - Page 4
<PAGE>

     Pledgor to the appointment of or taking possession by a receiver,
     liquidator, assignee, trustee, custodian, sequestrator (or other similar
     official) of Pledgor for any substantial part of Pledgor's property, or the
     making by Pledgor of any assignment for the benefit of creditors, or the
     inability of Pledgor generally to pay his debts as such debts become due,
     or the taking of any action by Pledgor in furtherance of any of the
     foregoing.

10.  Remedies.  Upon the occurrence of an Event of Default, Secured Party may
     then exercise any and all rights to which it is entitled under the UCC or
     otherwise.  Pledgor hereby grants to Secured Party an irrevocable proxy
     coupled with an interest to exercise as to such Collateral, upon the
     occurrence of an Event of Default, all rights, powers and remedies of an
     owner and all of the rights, powers and remedies hereinabove set forth, the
     proxy herein granted to exist until all of the Obligations have been paid
     and performed in full.

11.  Application of Proceeds.  The proceeds of any disposition of the Collateral
     or other action by Secured Party shall be applied (a) first, to the cost
     and expenses incurred in connection therewith or incidental thereto or to
     the care or safekeeping of any of the Collateral or in any way relating to
     the rights of Secured Party hereunder, including reasonable attorneys' fees
     and legal expenses; (b) then, to the satisfaction of the Obligations in
     such order and to such portions as Secured Party may elect; (c) then, to
     the payment of any other amounts required by applicable law; and (d) then,
     to Pledgor to the extent of any surplus proceeds.  Secured Party shall be
     under no duty to exercise or to withhold the exercise of any of the rights,
     powers, privileges and options expressly or implicitly granted to Secured
     Party in this Pledge Agreement, and shall not be responsible for any
     failure to do so or delay in so doing.

12.  Notification of Sale.  Reasonable notification of the time and place of any
     public sale of the Collateral, or reasonable notification of the time after
     which any private sale or other intended disposition of the Collateral is
     to be made, shall be sent to Pledgor and to any other person entitled under
     the UCC to notice; provided that if any of the Collateral threatens to
     decline speedily in value or is of the type customarily sold on a
     recognized market, Secured Party may sell or otherwise dispose of the
     Collateral without notification, advertisement, or other notice of any
     kind.  It is agreed that notice sent or given not less than five (5)
     calendar days prior to the taking of the action to which the notice relates
     is reasonable notification and notice for the purposes of this paragraph.

13.  Satisfaction of Obligations and Release of Collateral.  Upon the
     satisfaction in full of the Obligations, and the satisfaction of all
     additional costs and expenses of Secured Party as provided herein, this
     Pledge Agreement shall terminate, and Secured Party shall deliver to
     Pledgor, at Pledgor's expense, such of the Collateral as shall not have
     been sold or otherwise applied pursuant to this Pledge Agreement which
     Secured Party shall have in its possession.  In addition and
     notwithstanding any provision contained in this Pledge

Stock Pledge Agreement - Page 5
<PAGE>

     Agreement to the contrary, Pledgor shall be entitled to obtain the release
     of shares of Stock from the Security Interest created hereby by paying to
     Secured Party the per share Purchase Price set forth in the Purchase
     Agreement (appropriately adjusted to reflect stock splits, subdivisions,
     combinations and similar transactions), in cash, for each share of Stock
     which Pledgor desires be released from the terms hereof and upon receipt of
     such payment, Secured Party will promptly release the applicable number of
     shares of Stock to Pledgor subject, where applicable, to the terms of the
     Purchase Option in the Purchase Agreement.

14.  Notices.  Any notice required or permitted by this Pledge Agreement shall
     be deemed to have been given or made when deposited with a reputable
     overnight delivery service, such as Federal Express, or in the United
     States Mail, postage prepaid, certified mail, return receipt requested,
     addressed to the parties at the addresses set forth opposite their
     respective signatures below, or, if hand delivered, upon actual receipt.

15.  Duties of Secured Party.  Secured Party's duty with respect to any
     Collateral now or hereafter in the possession of Secured Party is solely to
     use reasonable care in the custody and preservation of the Collateral.
     Secured Party shall be deemed to have exercised reasonable care in the
     custody and preservation of the Collateral if the Collateral is accorded
     treatment substantially equal to that which Secured Party accords its own
     property, it being understood that Secured Party shall not have any
     responsibility for ascertaining or taking action with respect to calls,
     conversions, exchanges, maturities, tenders or other matters relative to
     any Collateral or for informing Pledgor of such matters whether or not
     Secured Party has or is deemed to have any knowledge of such matters.
     Secured Party shall not be required to take any steps necessary to preserve
     any rights in the Collateral against prior parties or to protect, perfect,
     preserve or maintain any security interest given to secure the Collateral,
     nor to invest any cash constituting Collateral in any account or security
     or otherwise.

16.  Indemnification.  Pledgor hereby agrees to indemnify and to hold Secured
     Party harmless from and against any loss (excluding any loss attributable
     to a diminution in the value of the Stock), claim, demand or expense
     (including attorneys' fees) by reason, or in any manner related to, the
     Collateral, including any such claim as may arise by reason of any alleged
     breach of warranty concerning the Collateral, by reason of the failure of
     Pledgor to comply with any applicable state, federal or foreign statute,
     rule, regulation, order or decree, or by reason of Secured Party's efforts
     to enforce payment of the Obligations, including expenses incurred in
     satisfying any applicable securities laws.

17.  Expenses.  Pledgor will upon demand pay to Secured Party the amount of any
     and all reasonable expenses, including the reasonable fees and expenses of
     its counsel and of any experts and agents, which Secured Party may incur in
     connection with the custody or preservation of, or the sale of, collection
     from or other realization upon, any of the

Stock Pledge Agreement - Page 6
<PAGE>

     Collateral, the exercise or enforcement of any of the rights of Secured
     Party hereunder, or the failure by Pledgor to perform or observe any of the
     provisions hereof.

18.  Security Interest Absolute.  All rights of Secured Party and the pledge and
     Security Interest hereunder, and all obligations of Pledgor hereunder,
     shall be absolute and unconditional in all respects and shall not be
     released, diminished, impaired, or affected for any reason, including
     without limitation the occurrence of any one or more of the following
     events: (a) the taking or accepting of any other security or assurance for
     any or all of the Obligations; (b) any change in the time, manner or place
     of payment of, or in any other term of, all or any of the Obligations; (c)
     any exchange, release, subordination, surrender, loss or nonperfection of
     any other collateral at any time existing in connection with any or all of
     the Obligations, or any release or  amendment or waiver of or consent to
     departure from any guaranty, or other security, for all or any of the
     Obligations; (d) any neglect, delay, omission, failure, or refusal of
     Secured Party to take or prosecute any action in connection with this
     Pledge Agreement: (e) the insolvency or bankruptcy of Pledgor: or (f) any
     other circumstance which might otherwise constitute a defense available to
     a discharge of Pledgor in respect of the Obligations of Pledgor in respect
     of this Pledge Agreement.

19.  Waivers.  Except as otherwise required by the terms hereof or by applicable
     law, Pledgor hereby waives all notices, including but not limited to
     demand, presentment for payment, notice of nonpayment, protest, notice of
     protest, notice of Intent to accelerate, notice of acceleration and all
     other notices.

20.  Remedies Cumulative.  The rights and remedies provided herein are
     cumulative and are in addition to and not exclusive of any rights or
     remedies provided by law, including, but without limitation, the rights and
     remedies of a secured party under the UCC.

21.  Amendment.  This Pledge Agreement may be amended only by written instrument
     signed by all parties.

22.  Invalidity of Any Provision.  The invalidity of any one or more phrases,
     sentences, clauses, paragraphs or sections hereof shall not affect the
     remaining portions of the Pledge Agreement, all of which are being inserted
     conditionally on its being held legally valid.  In the event that any one
     or more of the phrases, sentences, clauses, paragraphs or sections
     contained herein should be invalid, or should operate to render this Pledge
     Agreement invalid, then this Pledge Agreement shall be construed as if such
     invalid phrase or phrases, sentence or sentences, clause or clauses,
     paragraph or paragraphs, or section or sections had not been inserted.

23.  Assignment.  This Pledge Agreement shall apply to, inure to the benefit of
     and be binding upon and enforceable against the parties hereto and their
     respective legal representatives,

Stock Pledge Agreement - Page 7
<PAGE>

     successors and assigns, except that the rights and obligations of Pledgor
     contained herein shall not be assignable.

24.  Governing Law.  The substantive laws of the State of Texas shall govern the
     validity, construction, enforcement and interpretation of this Pledge
     Agreement, unless the laws of another state or jurisdiction require the
     application of the laws of such state or jurisdiction.  This Pledge
     Agreement is performable in Dallas County, Texas.

     IN WITNESS WHEREOF, the parties have executed this Pledge Agreement as of
the date and year first above written.


                                    /s/ DANIEL F. BROWN
                                    -------------------------------------------
                                    Daniel F. Brown
                                    Address:



                                    SECURED PARTY:


Address:                            COMPUCOM SYSTEMS, INC.


7171 Forest Lane                    By: /s/ M. LAZANE SMITH
Dallas, Texas 75230                    ----------------------------------------
                                    Its:  Sr. VP Finance, CFO

Stock Pledge Agreement - Page 8