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                                                                     EXHIBIT 2.3

                  (Patriot Scientific Corporation Letterhead)
                                December 4, 1996

<<Name1>>
<<Name2>>
<<Street>>
<<City>>, <<State>> <<ZIP>>

<<Salutation>>:

Patriot Scientific Corporation, a Delaware corporation (the "Company") hereby
offers to acquire all of the shares of the Common Stock (the "Shares") of
Metacomp, Inc., a California corporation, owned by you in exchange for 1.1
shares of the Common Stock of the Company for each share of Metacomp, Inc. (the
"Exchange Value") upon the terms and subject to the conditions set forth in this
Exchange Offer and in the Letter of Transmittal (the "Letter of Transmittal",
which, together with this Exchange Offer, constitute the "Offer"). The Offer
constitutes a part of a tender for most but not all of the issued and
outstanding shares of Metacomp. If your Shares are properly tendered, they will
be acquired at the Exchange Value, upon the terms and subject to the conditions
of the Offer.

You will not be obligated to pay brokerage commissions, solicitation fees, or,
subject to Instruction 6 of the Letter of Transmittal, stock transfer taxes
because of the Company's acquisition of your Shares pursuant to the Offer.

The Company's shares are not listed on any exchange or on NASDAQ and are
principally traded over-the-counter. On November 25, 1996, the closing sales
price of Company stock traded over-the-counter was $1.40 per share. The Company
urges you to obtain the current market quotations for its shares prior to
tendering your Shares to the Company.

1.   Procedures for Tendering Shares.
     
     For your Shares to be properly tendered pursuant to the Offer, the
     certificate for your Shares, together with a properly completed and duly
     executed Letter of Transmittal (or a facsimile thereof) including required
     signature guarantees, and any other documents required by the Letter of
     Transmittal, must be received prior to 5:00 p.m., Pacific Standard Time, on
     Tuesday, December 17, 1996 (the "Expiration Date") by the Company.

     The acceptance of your Shares by the Company for exchange will constitute a
     binding agreement between you and the Company upon the terms and subject to
     the conditions of the Offer. However, neither the Offer nor the Company's
     receipt of your certificate and a Letter of Transmittal will require the
     Company to accept the tender of your Shares. The Company will in all events
     retain the right to accept or reject such tender and may do so for any
     reason, including, without limitation, the receipt of tenders for less than
     90% of the issued and outstanding shares of Metacomp.
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     Your signature on the Letter of Transmittal must be guaranteed by an
     "Eligible Institution." See Instruction 1 of the Letter of Transmittal. If
     the certificate representing your Shares is registered in the name of a
     person other than the signer of the Letter of Transmittal, or if the shares
     to be issued in exchange for your Shares of Metacomp are to be issued to a
     person other than the registered holder of such Shares, the certificate
     must be endorsed or accompanied by an appropriate stock power, in either
     case signed exactly as the name of the registered holder appears on the
     certificate, with a signature on the certificate or stock power guaranteed
     by an Eligible Institution.

     The issuance of shares of the Company in return for your Metacomp Shares
     will only occur after the tender of those shares has been accepted by the
     Company and the Company has received certificates for those shares, a
     properly completed and duly executed Letter of Transmittal and any other
     documents required by the Letter of Transmittal. The method of delivery of
     all documents, including stock certificates, the Letter of Transmittal, and
     any other required documents, is at your election and risk. If delivery is
     by mail, registered mail with return receipt requested, properly insured,
     is recommended.

     All questions as to the form, eligibility, validity (including time of
     receipt) and acceptance of the tender of your Shares will be determined by
     the Company, in its sole discretion, which determination shall be final and
     binding on the parties. The Company reserves the right to reject any tender
     it determines not to be in proper form and to waive any defect or
     irregularity of the tender of your Shares. Neither the Company nor any
     other person is or will be obligated to give notice of any defect or
     irregularity in tender, nor will the Company or any such person incur any
     liability for failure to give such notice.

  2. Withdrawal Rights.

     Except as otherwise provided in this Section 2, a tender of Shares made
     pursuant to this Offer is irrevocable. A tender of your Shares pursuant to
     this Offer may be made at any time prior to the Expiration Date and may
     also be withdrawn after 5:00 p.m., Pacific Standard Time on Tuesday,
     December 31, 1996, unless previously accepted by the Company.

     For a withdrawal to be effective, the Company must receive a timely written
     or facsimile transmission Notice of Withdrawal as is set forth in this
     letter. All questions as to the form and validity (including time of
     receipt) of a Notice of Withdrawal will be determined by the Company, in
     its sole discretion, which determination shall be final and binding on all
     parties.

  3. Exchange of Shares and Issuance of Patriot Shares.


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     Upon the terms and subject to the conditions of the Offer, the Company will
     accept for exchange Shares properly tendered prior to the Expiration Date
     as promptly as practicable following the Expiration Date. For purposes of
     the Offer, the Company will be deemed to have accepted for exchange Shares
     which are tendered prior to the Expiration Date if and when it gives
     written notice to you of its acceptance of such Shares for exchange
     pursuant to the Offer.

     As soon as possible following its acceptance of the tender of your Shares
     for exchange, the Company will issue to you certificates evidencing a
     number of shares of its Common Stock equal to the Exchange Value. No
     fractional shares will be issued. The Company will round any fractional
     share to the nearest whole share.

     The Company will pay stock transfer taxes, if any, payable on account of
     the transfer to it of your Shares; provided, however, that if the shares to
     be issued in exchange for your Shares are to be issued to any person other
     than the registered holder of your Shares, or if the tendered certificates
     are registered in the name of any person other than the person signing the
     Letter of Transmittal, the amount of any stock transfer taxes payable on
     account of such tender will be your responsibility or that of such other
     person.

  4. Certain Conditions of the Offer.

     Notwithstanding any other provision of this Exchange Offer, the Company
     will not be required to accept for exchange any Shares tendered, and may
     terminate or amend the Offer or may postpone the acceptance of the Shares,
     if at any time following the date of this Exchange Offer and at or before
     the time of acceptance for exchange of the Shares, any of the following
     events shall have occurred (or shall have been determined by the Company to
     have occurred) which, in the Company's sole judgment in any such case, and
     regardless of the circumstances giving rise thereto, makes it inadvisable
     to proceed with the Offer or with the acceptance of the Shares for
     exchange, including, without limitation, the following:

     (a)   The Company shall have received tenders of Shares constituting an
           aggregate of less than 90% of the issued and outstanding shares of
           Metacomp;

     (b)   Metacomp shall have received notice from any unsecured creditor of
           Metacomp that it objects to the closing of Metacomp's bankruptcy
           proceeding before the United States District Court for the Southern
           District of California.

     (c)   There shall be any claim, action or proceeding threatened, pending or
           instituted which challenges the making of this Offer or the
           acquisition of Shares pursuant to this Offer, or otherwise relates in
           any manner to the Offer.

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     (d)   The failure to satisfy any of the conditions to the closing of the
           exchange set forth in that certain letter of intent, dated October
           30, 1996, by and among the Company, Metacomp, and certain of the
           shareholders of Metacomp.

     (e)   Any change shall occur or be threatened in the business, condition
           (financial or otherwise) income, operations or prospects of Metacomp.

     (f)   The Company shall have received audited financial statements of
           Metacomp for each of the years ended July 31, 1995 and July 31, 1996.

     The foregoing conditions are non-exclusive, are for the benefit of the
     Company, and may be asserted by the Company regardless of the circumstances
     giving rise to them (including any action or failure to act on the part of
     the Company) or may be waived by the Company in whole or in part. The
     Company's failure at any time to exercise any of the foregoing rights shall
     not be deemed a waiver of any such right, and each such right shall be
     deemed an ongoing right which may be asserted at any time and from time to
     time.

     Any determination by the Company concerning any of the events described in
     this Section 4 and any related judgment by the Company regarding the
     inadvisability of proceeding with the exchange and the acquisition of
     tendered Shares shall be final and binding on all parties.

  5. Price Range of Shares.

     The Company's Common Stock is traded in the over-the-counter market and is
     quoted on the NASD OTC Bulletin Board system maintained by the National
     Association of Securities Dealers, Inc. Prices reported represent prices
     between dealers, do not include markups or commissions and do not
     necessarily represent actual transactions. The market for the Company's
     Shares has been sporadic and at times very limited.

     The following table sets forth the high and low bid quotations for the
     Common Stock for the fiscal years ended May 31, 1996 and 1995 and the
     period ended November 25, 1996.



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                                                    BID QUOTATIONS
                                                    --------------
                                                HIGH              LOW

                                                            
    Period Ended November 25, 1996
     First Quarter                             $3.38             $1.75
     Second Quarter Thru November 25           $2.25             $1.16

    Fiscal Year Ended May 31, 1996
     First Quarter                             $0.35             $0.12
     Second Quarter                            $0.76             $0.22
     Third Quarter                             $3.53             $0.47
     Fourth Quarter                            $3.97             $2.00

    Fiscal Year Ended May 31, 1995
     First Quarter                             $0.72             $0.12
     Second Quarter                            $0.44             $0.12
     Third Quarter                             $0.44             $0.09
     Fourth Quarter                            $0.31             $0.09


     The Company has approximately 137 shareholders of record as of August 9,
     1996. At August 9, 1996 there were 29,811,975 shares of Common Stock issued
     and outstanding. The Company has never paid a cash dividend on its Common
     Stock and does not expect to pay one in the foreseeable future.

  6. Representations of Shareholders.

     By execution of the Letter of Transmittal, you acknowledge that the
     following representations are true:

     (a)   You have received a copy of the Company's report on Form 10-K for the
           year ended May 31, 1996 and a copy of its report on Form 10-Q for the
           quarter ended August 31, 1996.

     (b)   You understand that (i) the Patriot Common Stock to be issued to you
           will not have been registered under any federal or state securities
           laws and may not be resold unless so registered or in a transaction
           exempt from registration and (ii) the certificates evidencing the
           Patriot shares to be issued will bear a legend reflecting this
           limitation on transferability.



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     (c)   You, together with your advisors, have such knowledge and experience
           in financial or business matters that you are capable of evaluating
           the merits and risks of this Exchange Offer, the Patriot Common
           Stock, and the transactions related thereto.

     (d)   You understand and have fully considered for purposes for this
           investment the risks of this investment and that (i) this investment
           is suitable only for an investor who is able to bear the economic
           consequences of losing his or her entire investment, (ii) the Patriot
           Common Stock is a speculative investment which involves a high degree
           of risk of loss, and (iii) you are able to bear the economic risk of
           this investment.

     (e)   You and your representatives and advisors have been given the
           opportunity to ask questions of, and have received satisfactory
           answers from, the Company concerning the terms of the Exchange Offer
           and the business prospects of the Company.

     (f)   You and your representatives and advisors have been given the
           opportunity to ask questions of, and have received satisfactory
           answer from, representatives of Metacomp concerning the financial
           condition and business prospects of Metacomp.

7.   Covenants of the Company. Within six months following the issuance of
     Patriot shares in exchange for your Shares of Metacomp, the Company will
     use its best efforts to prepare, file, and diligently pursue to
     effectiveness a registration statement on Form S-3 (or, if Form S-3 is not
     available, Form SB-2) with the Securities and Exchange Commission for the
     registration of the shares of Patriot Common Stock to be issued to you
     pursuant to the Offer. The cost of such registration will be borne by the
     Company; however, the Company will not be responsible for any separate
     expenses incurred by you in connection with this offering or for any
     commissions or discounts paid to any underwriter or broker. As a condition
     to the filing of such registration statement, the Company may require that
     former shareholders of Metacomp who receive 10,000 or more shares of
     Patriot Common Stock and on whose behalf the registration statement is
     filed enter into lock-up agreements specifying that, for a period of two
     years following


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     the closing of the Exchange Offer, each such shareholder would be eligible
     to sell not more than five percent (5%) of his shares of Patriot Common
     Stock during any calendar month.

Very truly yours,

Patriot Scientific Corporation

By: /s/ MICHAEL A. CARENZO
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    Michael A. Carenzo, President



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