Document:

WAIVER AND AGREEMENT

      THIS WAIVER AND AGREEMENT (the "Agreement" or "Waiver and Agreement") is
entered into as of February 9, 2006, by and among Patriot Scientific
Corporation, a corporation duly organized and existing under the laws of the
State of Delaware (the "Company" or "Patriot") and Swartz Private Equity, LLC
(hereinafter referred to as "SPE" or the "Investor").

                                    RECITALS:

      Whereas, pursuant to agreements between the parties, PATRIOT issued
certain warrants and other securities to SPE;

      Whereas, SPE has agreed to waive its rights to receive a portion of the
dividends to which it would otherwise entitled under the terms of the following
warrants (collectively, the "Subject Warrants") which remain outstanding as of
the date hereof:

      Holder          Date of Issuance         Warrant #       Number of Shares
      ------          ----------------         ---------       ----------------
       SPE                 1/1/2004                                3,051,299

       SPE                3/23/2004                                8,035,192

       SPE                10/1/2003                                1,557,653

       SPE                 4/1/2004                                5,240,211

       SPE                2/15/2002                                  206,250

       SPE                 2/1/2006                                7,000,000

      Whereas, the PARTIES mutually desire to enter into this Waiver and
Agreement.

                                     TERMS:

      NOW, THEREFORE, the parties agree as follows:

1. PARTIAL WAIVER OF DIVIDENDS. Section 5(a) of each of the Subject Warrants is
hereby amended and restated to read in full as follows:

      5.    Anti-Dilution Adjustments.

            (a) Distribution. If at any time after the Issue Date hereof, the
Company shall declare or make any distribution of its assets (or rights to
acquire its assets) or shares of its capital stock (other than Common Stock) to
Holders of Common Stock of the Company as a partial liquidating dividend, by way
of return of capital or otherwise (including any dividend or distribution to the
Company's shareholders in cash or shares [or rights to acquire shares] of
capital stock of any other public or private company, including but not limited
to a subsidiary or spin-off of the Company (a "Distribution")), then the Holder
of this Warrant shall be entitled to immediately receive the amount of such
distribution (in kind) which would have been payable to the Holder with respect
to the shares of Common Stock issuable upon a Full Exercise (as defined below)
of this Warrant as of the declaration of such dividend (without regard to any
contractual, legal or regulatory limitations on the amount of such conversion),
had such Holder been the holder of such shares of Common Stock on the record
date for determination of shareholders entitled to such Distribution. For
purposes of this subsection 5(a), with respect to a given Distribution, "Full
Exercise" (i) shall mean a full Cash Exercise, if the Market Price (as defined
herein), as determined on the record date ("Record Date") for determination of
shareholders entitled to the subject Distribution is less than $.15, and (ii)
shall mean a full Cashless Exercise, if the Market Price, as determined on the
Record Date, is greater than or equal to $.15.

                                       1
<PAGE>

2. NO FURTHER MODIFICATION. Except as set forth in this Agreement and/or the
Agreement with regard to Exercise Price Resets and 4.99% Limitation entered into
by the parties concurrently with this Agreement, all of the terms and provisions
of the Subject Warrants in effect as of the date of this Agreement shall remain
unmodified and in full force and effect.

         IN WITNESS WHEREOF, the undersigned have executed this Agreement as of
this 9th day of February, 2006.

COMPANY:                                       SWARTZ PRIVATE EQUITY, LLC
PATRIOT SCIENTIFIC CORPORATION

By:                                            By:
   ------------------------------------           -----------------------------
   David H. Pohl                                  Eric S. Swartz,  Manager
   Chief Executive Officer

By:
   ------------------------------------
   Thomas J. Sweeney
   Chief Financial Officer

ADDRESS:

Patriot Scientific Corporation
10989 Via Frontera
San Diego, CA 92127
Telephone: (858) 674-5000
Facsimile: (858) 674-5005

                                       2THIS WARRANT AND THE  SECURITIES  ISSUABLE  UPON  EXERCISE  HEREOF HAVE NOT BEEN
REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES  ACT"),
OR ANY  STATE  SECURITIES  LAW,  AND MAY  NOT BE  SOLD,  TRANSFERRED,  ASSIGNED,
PLEDGED,  HYPOTHECATED  OR  OTHERWISE  DISPOSED  OF OR  EXERCISED  UNLESS  (i) A
REGISTRATION  STATEMENT UNDER THE SECURITIES ACT AND APPLICABLE STATE SECURITIES
LAWS SHALL HAVE BECOME EFFECTIVE WITH REGARD THERETO,  OR (ii) AN EXEMPTION FROM
REGISTRATION  UNDER THE SECURITIES ACT AND APPLICABLE  STATE  SECURITIES LAWS IS
AVAILABLE IN CONNECTION WITH SUCH OFFER, SALE OR TRANSFER.

AN INVESTMENT IN THESE SECURITIES  INVOLVES A HIGH DEGREE OF RISK.  HOLDERS MUST
RELY ON THEIR  OWN  ANALYSIS  OF THE  INVESTMENT  AND  ASSESSMENT  OF THE  RISKS
INVOLVED.

Warrant to Purchase
7,000,000 shares                                            Warrant Number ____
---------

                        Warrant to Purchase Common Stock
                                       of
                            PATRIOT SCIENTIFIC CORP.

      THIS CERTIFIES that LINCOLN VENTURES,  LLC or any subsequent holder hereof
("Holder") has the right to purchase from Patriot  Scientific  Corp., a Delaware
corporation  (the  "Company"),  up to  7,000,000  fully  paid and  nonassessable
shares,  of the Company's  common stock,  $0.00001 par value per share  ("Common
Stock"),  subject to  adjustment  as  provided  herein,  at a price equal to the
Exercise Price as defined in Section 3 below,  at any time beginning on the Date
of Issuance (defined below) and ending at 5:00 p.m., New York, New York time, on
the date  that is five (5)  years  after  the Date of  Issuance  (the  "Exercise
Period").

      Holder agrees with the Company that this Warrant to Purchase  Common Stock
of the Company  (this  "Warrant" or this  "Agreement")  is issued and all rights
hereunder  shall  be held  subject  to all of the  conditions,  limitations  and
provisions set forth herein.

      1.    Date of Issuance and Term.

      This  Warrant  shall be deemed to be issued on  February 9, 2006 ("Date of
Issuance").  The term of this Warrant is from the Date of Issuance through April
1, 2011.

      Notwithstanding anything to the contrary herein, the applicable portion of
this  Warrant  shall not be  exercisable  during any time that,  and only to the
extent  that,  the number of shares of Common  Stock to be issued to Holder upon
such exercise,  when added to the number of shares of Common Stock, if any, that
the  Holder  otherwise  beneficially  owns  (outside  of this  Warrant,  and not
including any other warrants  having a provision  substantially  similar to this
paragraph)  at the time of such  exercise,  would  exceed 9.99% of the number of
shares of Common  Stock then  outstanding,  as  determined  in  accordance  with
Section 13(d) of the Exchange Act (the "9.99% Limitation"). The 9.99% Limitation
shall be  conclusively  satisfied if the applicable  Exercise  Notice includes a
signed  representation  by the Holder  that the  issuance  of the shares in such
Exercise Notice will not violate the 9.99% Limitation, and the Company shall not
be entitled to require additional documentation of such satisfaction.

                                       1
<PAGE>

      2.    Exercise.

            (a) Manner of Exercise. During the Exercise Period, this Warrant may
be  exercised  as to all or any  lesser  number of full  shares of Common  Stock
covered hereby (the "Warrant  Shares") upon surrender of this Warrant,  with the
Exercise Form attached hereto as Exhibit A (the "Exercise  Form") duly completed
and executed,  together with the full Exercise Price (as defined below) for each
share of Common  Stock as to which this Warrant is  exercised,  at the office of
the Company,  Patriot  Scientific  Corporation,  Attn: Lowell W. Giffhorn,  CFO;
10989 Via Frontera, San Diego, CA 92127; Telephone:  (619) 674-5000,  Facsimile:
(619) 674-5005 or at such other office or agency as the Company may designate in
writing,  by overnight  mail,  with an advance copy of the Exercise Form sent to
the Company and its Transfer Agent by facsimile  (such  surrender and payment of
the Exercise Price hereinafter called the "Exercise of this Warrant").

            (b) Date of Exercise. The "Date of Exercise" of the Warrant shall be
defined as the date that the advance copy of the completed and executed Exercise
Form is sent by facsimile to the Company, provided that the original Warrant and
Exercise  Form are  received by the Company as soon as  practicable  thereafter.
Alternatively,  the Date of Exercise  shall be defined as the date the  original
Exercise Form is received by the Company,  if Holder has not sent advance notice
by facsimile.  The Company shall not be required to deliver the shares of Common
Stock to the Holder until the requirements of Section 2(a) above are satisfied.

            (c) Cancellation of Warrant. This Warrant shall be canceled upon the
Exercise of this Warrant,  and, as soon as practical after the Date of Exercise,
Holder  shall be  entitled  to  receive  Common  Stock for the  number of shares
purchased  upon  such  Exercise  of this  Warrant,  and if this  Warrant  is not
exercised in full, Holder shall be entitled to receive a new Warrant (containing
terms identical to this Warrant)  representing  any unexercised  portion of this
Warrant in addition to such Common Stock.

            (d) Holder of Record.  Each  person in whose  name any  Warrant  for
shares of Common Stock is issued shall,  for all  purposes,  be deemed to be the
Holder  of  record  of such  shares  on the Date of  Exercise  of this  Warrant,
irrespective  of the date of delivery  of the Common  Stock  purchased  upon the
Exercise  of this  Warrant.  Nothing  in this  Warrant  shall  be  construed  as
conferring upon Holder any rights as a stockholder of the Company.

      3.    Payment of Warrant Exercise Price.

      The Exercise Price  ("Exercise  Price") shall  initially equal $0.0775 per
share.

      Payment of the Exercise Price may be made by either of the following, or a
combination thereof, at the election of Holder:

                                       2
<PAGE>

      (i) Cash Exercise: cash, bank or cashiers check or wire transfer; or

      (ii) Cashless Exercise:  surrender of this Warrant at the principal office
of the Company  together  with notice of cashless  election,  in which event the
Company shall issue Holder a number of shares of Common Stock computed using the
following formula:

                                  X = Y (A-B)/A

where: X = the number of shares of Common Stock to be issued to Holder.

       Y = the number of shares of Common  Stock for which this Warrant is being
exercised.

       A = the Market  Price of one (1) share of Common  Stock (for  purposes of
       this  Section  3(ii),  where  "MARKET  PRICE," as of any date,  means the
       Volume Weighted Average Price (as defined herein) of the Company's Common
       Stock  during the ten (10)  consecutive  trading  day period  immediately
       preceding the date in question.

       As used herein,  the "VOLUME  WEIGHTED AVERAGE PRICE" for any security as
       of any date means the volume weighted  average sale price on the Over the
       Counter Electronic Bulletin Board (the "OTC-BB") as reported by, or based
       upon data  reported by,  Bloomberg  Financial  Markets or an  equivalent,
       reliable   reporting   service  mutually   acceptable  to  and  hereafter
       designated  by holders of a majority in interest of the  Warrants and the
       Company  ("BLOOMBERG")  or, if the  OTC-BB is not the  principal  trading
       market for such security,  the volume weighted average sale price of such
       security on the  principal  securities  exchange or trading  market where
       such  security is listed or traded as reported  by  Bloomberg,  or, if no
       volume  weighted  average sale price is reported for such security,  then
       the last closing  trade price of such  security as reported by Bloomberg,
       or, if no last  closing  trade  price is  reported  for such  security by
       Bloomberg,  the  average of the bid prices of any market  makers for such
       security that are listed in the "pink  sheets" by the National  Quotation
       Bureau,  Inc. If the Volume  Weighted  Average Price cannot be calculated
       for such security on such date in the manner provided  above,  the volume
       weighted  average  price  shall be the  fair  market  value  as  mutually
       determined  by the  Company  and the holders of a majority in interest of
       the Warrants  being  exercised  for which the  calculation  of the volume
       weighted  average  price is required in order to  determine  the Exercise
       Price of such  Warrants.  "TRADING  DAY"  shall mean any day on which the
       Common Sock is traded for any period on the OTC-BB,  or on the  principal
       securities  exchange or other securities market on which the Common Stock
       is then being traded.

       B = the Exercise Price.

       For  purposes  of Rule  144 and  sub-section  (d)(3)(ii)  thereof,  it is
intended,  understood  and  acknowledged  that the Common  Stock  issuable  upon
exercise of this Warrant in a cashless  exercise  transaction shall be deemed to
have  been  acquired  at the time  this  Warrant  was  issued.  Moreover,  it is
intended,  understood  and  acknowledged  that the holding period for the Common
Stock issuable upon exercise of this Warrant in a cashless exercise  transaction
shall be deemed to have commenced on the date this Warrant was issued.

                                       3
<PAGE>

      4.    Transfer and Registration.

            (a) Transfer Rights.  Subject to the provisions of Section 8 of this
Warrant,  this Warrant may be transferred on the books of the Company,  in whole
or in part, in person or by attorney,  upon  surrender of this Warrant  properly
completed and endorsed.  This Warrant shall be canceled upon such surrender and,
as soon as  practicable  thereafter,  the person to whom such  transfer  is made
shall be entitled to receive a new Warrant or Warrants as to the portion of this
Warrant transferred, and Holder shall be entitled to receive a new Warrant as to
the portion hereof retained.

            (b)  Registrable  Securities.  The Common  Stock  issuable  upon the
exercise  of this  Warrant has  registration  rights  pursuant  to that  certain
Registration  Rights Agreements  between the Company and Lincoln  Ventures,  LLC
dated even herewith.

      5.    Anti-Dilution Adjustments.

            (a)  Distribution.  If at any time after the Issue Date hereof,  the
Company  shall  declare  or make any  distribution  of its  assets (or rights to
acquire its assets) or shares of its capital  stock (other than Common Stock) to
Holders of Common Stock of the Company as a partial liquidating dividend, by way
of return of capital or otherwise (including any dividend or distribution to the
Company's  shareholders  in cash or shares  [or  rights to  acquire  shares]  of
capital stock of any other public or private company,  including but not limited
to a subsidiary or spin-off of the Company (a "Distribution")), then the Holders
of this Warrant  shall be entitled,  to  immediately  receive the amount of such
distribution  (in kind) which would have been payable to the Holder with respect
to the shares of Common Stock  issuable upon a Full Exercise (as defined  below)
of  this  Warrant  (without  regard  to any  contractual,  legal  or  regulatory
limitations on the amount of such  conversion),  had such Holder been the holder
of such  shares  of  Common  Stock  on the  record  date  for  determination  of
shareholders entitled to such Distribution.

      For  purposes  of  this   subsection   5(a),   with  respect  to  a  given
Distribution, "Full Exercise" (i) shall mean a full Cash Exercise, if the Market
Price (as defined herein),  as determined on the record date ("Record Date") for
determination of shareholders  entitled to the subject Distribution is less than
$.15,  and (ii) shall mean a full Cashless  Exercise,  if the Market  Price,  as
determined on the Record Date, is greater than or equal to $.15.

            (b)  Recapitalization or  Reclassification.  If the Company shall at
any  time  effect  a   recapitalization,   reclassification   or  other  similar
transaction  of such  character that the shares of Common Stock shall be changed
into or become  exchangeable for a larger or smaller number of shares, then upon
the effective  date  thereof,  the number of shares of Common Stock which Holder
shall be entitled to purchase  upon  Exercise of this Warrant shall be increased
or  decreased,  as the case may be,  in direct  proportion  to the  increase  or
decrease   in  the  number  of  shares  of  Common   Stock  by  reason  of  such
recapitalization,  reclassification  or similar  transaction,  and the  Exercise
Price  shall  be,  in  the  case  of  an  increase  in  the  number  of  shares,
proportionally  decreased  and, in the case of decrease in the number of shares,
proportionally  increased.  The  Company  shall give  Holder the same  notice it
provides to holders of Common Stock of any transaction described in this Section
5(b).

                                       4
<PAGE>

            (c) [Intentionally Left Blank].

            (d) Notice of  Consolidation  or  Merger.  In the event of a merger,
consolidation,  exchange of shares, recapitalization,  reorganization,  or other
similar event, as a result of which shares of Common Stock shall be changed into
the same or a different number of shares of the same or another class or classes
of stock or securities or other assets of the Company or another entity or there
is a sale  of all or  substantially  all  the  Company's  assets  (a  "Corporate
Change"),  then this Warrant shall be  exerciseable  into such class and type of
securities  or other assets as Holder would have  received had Holder  exercised
this Warrant immediately prior to such Corporate Change; provided, however, that
Company  may not affect any  Corporate  Change  unless it first shall have given
thirty (30) business days notice to Holder hereof of any Corporate Change.

            (e)  Exercise  Price  Adjusted.  As used in this  Warrant,  the term
"Exercise  Price" shall mean the purchase price per share specified in Section 3
of this Warrant,  until the occurrence of an event stated in subsection (a), (b)
or (c) of this Section 5, and thereafter  shall mean said price as adjusted from
time to time in  accordance  with the  provisions  of said  subsection.  No such
adjustment  under this  Section 5 shall be made  unless  such  adjustment  would
change the Exercise Price at the time by $.01 or more; provided,  however,  that
all  adjustments  not so made  shall be  deferred  and made  when the  aggregate
thereof  would  change  the  Exercise  Price  at the  time by $.01 or  more.  No
adjustment  made  pursuant to any provision of this Section 5 shall have the net
effect of increasing  the Exercise  Price in relation to the split  adjusted and
distribution  adjusted price of the Common Stock. The number of shares of Common
Stock subject  hereto shall increase  proportionately  with each decrease in the
Exercise Price.

            (f) Adjustments:  Additional  Shares,  Securities or Assets.  In the
event  that at any time,  as a result of an  adjustment  made  pursuant  to this
Section 5, Holder  shall,  upon  Exercise of this  Warrant,  become  entitled to
receive shares and/or other securities or assets (other than Common Stock) then,
wherever  appropriate,  all references herein to shares of Common Stock shall be
deemed to refer to and include such shares  and/or other  securities  or assets;
and thereafter the number of such shares and/or other securities or assets shall
be subject to adjustment  from time to time in a manner and upon terms as nearly
equivalent as practicable to the provisions of this Section 5.

      6.    Fractional Interests.

      No  fractional  shares or scrip  representing  fractional  shares shall be
issuable  upon the Exercise of this  Warrant,  but on Exercise of this  Warrant,
Holder  may  purchase  only a whole  number of shares  of Common  Stock.  If, on
Exercise of this  Warrant,  Holder  would be entitled to a  fractional  share of
Common  Stock or a right to acquire a  fractional  share of Common  Stock,  such
fractional  share shall be disregarded  and the number of shares of Common Stock
issuable upon exercise shall be the next higher number of shares.

                                       5
<PAGE>

      7.    Reservation of Shares.

      From and after the date hereof, the Company shall at all times reserve for
issuance such number of authorized and unissued shares of Common Stock (or other
securities substituted therefor as herein above provided) as shall be sufficient
for the Exercise of this Warrant and payment of the  Exercise  Price.  If at any
time the number of shares of Common Stock  authorized  and reserved for issuance
is below the number of shares  sufficient  for the  Exercise of this Warrant and
payment of the Exercise  Price (based on the Exercise  Price in effect from time
to time),  the Company will  promptly  take all  corporate  action  necessary to
authorize  and  reserve  a  sufficient  number  of  shares,  including,  without
limitation,  calling a special meeting of  stockholders to authorize  additional
shares to meet the Company's obligations under this Section 7, in the case of an
insufficient  number of authorized  shares, and using its best efforts to obtain
stockholder  approval of an increase in such  authorized  number of shares.  The
Company covenants and agrees that upon the Exercise of this Warrant,  all shares
of Common Stock  issuable upon such exercise  shall be duly and validly  issued,
fully paid,  nonassessable and not subject to preemptive rights, rights of first
refusal or similar rights of any person or entity.

      8.    Restrictions on Transfer.

            (a) Registration or Exemption Required. This Warrant has been issued
in a transaction exempt from the registration  requirements of the Act by virtue
of Regulation D and exempt from state  registration under applicable state laws.
The Warrant and the Common Stock  issuable upon the Exercise of this Warrant may
not be pledged,  transferred,  sold or assigned  except pursuant to an effective
registration  statement or an exemption to the registration  requirements of the
Act and applicable state laws.

            (b)  Assignment.  If Holder can provide the Company with  reasonably
satisfactory evidence that the conditions of (a) above regarding registration or
exemption have been  satisfied,  Holder may sell,  transfer,  assign,  pledge or
otherwise  dispose of this Warrant,  in whole or in part. Holder shall deliver a
written notice to Company,  substantially in the form of the Assignment attached
hereto as Exhibit B,  indicating the person or persons to whom the Warrant shall
be  assigned  and the  respective  number of  warrants  to be  assigned  to each
assignee.  The Company  shall effect the  assignment  within ten (10) days,  and
shall deliver to the  assignee(s)  designated by Holder a Warrant or Warrants of
like tenor and terms for the appropriate number of shares.

      9.    Redemption.

      The Holder of this Warrant shall have the  redemption  rights set forth in
Section 9 of that certain Waiver,  Consent and Release Agreement entered into as
of June 1, 2005 by and between  Holder and the  Company,  the terms of which are
incorporated herein by this reference.

      10.   Benefits of this Warrant.

      Nothing in this Warrant shall be construed to confer upon any person other
than the Company and Holder any legal or equitable right,  remedy or claim under
this Warrant and this Warrant shall be for the sole and exclusive benefit of the
Company and Holder.

                                       6
<PAGE>

      11.   Arbitration; Governing Law.

      This Agreement  shall be governed by and construed in accordance  with the
laws of the State of New York  applicable to agreements made in and wholly to be
performed in that jurisdiction,  except for matters arising under the Act or the
Securities   Exchange  Act  of  1934,  which  matters  shall  be  construed  and
interpreted in accordance  with such laws. Any  controversy or claim arising out
of or  related to this  Agreement  or the  breach  thereof,  shall be settled by
binding  arbitration  in New York,  New York in  accordance  with the  Expedited
Procedures  (Rules 53-57) of the  Commercial  Arbitration  Rules of the American
Arbitration  Association  ("AAA").  A proceeding shall be commenced upon written
demand by Company or any Lender to the other.  The  arbitrator(s)  shall enter a
judgment by default  against any party,  which fails or refuses to appear in any
properly noticed  arbitration  proceeding.  The proceeding shall be conducted by
one (1)  arbitrator,  unless the amount  alleged  to be in dispute  exceeds  two
hundred fifty thousand dollars  ($250,000),  in which case three (3) arbitrators
shall  preside.  The  arbitrator(s)  will be chosen by the  parties  from a list
provided by the AAA, and if they are unable to agree  within ten (10) days,  the
AAA  shall  select  the  arbitrator(s).  The  arbitrators  must  be  experts  in
securities law and financial  transactions.  The arbitrators  shall assess costs
and expenses of the arbitration,  including all attorneys' and experts' fees, as
the  arbitrators  believe is  appropriate in light of the merits of the parties'
respective positions in the issues in dispute. Each party submits irrevocably to
the  jurisdiction  of any state  court  sitting in New York,  New York or to the
United States  District Court sitting in New York for purposes of enforcement of
any discovery order, judgment or award in connection with such arbitration.  The
award of the  arbitrator(s)  shall be final and binding upon the parties and may
be enforced in any court having  jurisdiction.  The arbitration shall be held in
such place as set by the  arbitrator(s) in accordance with Rule 55. With respect
to any arbitration  proceeding in accordance  with this section,  the prevailing
party's  reasonable   attorney's  fees  and  expenses  shall  be  borne  by  the
non-prevailing party.

      Although the parties, as expressed above, agree that all claims, including
claims that are equitable in nature,  for example  specific  performance,  shall
initially be prosecuted in the binding arbitration  procedure outlined above, if
the  arbitration  panel  dismisses or otherwise fails to entertain any or all of
the equitable claims asserted by reason of the fact that it lacks  jurisdiction,
power  and/or  authority  to  consider  such  claims  and/or  direct  the remedy
requested, then, in only that event, will the parties have the right to initiate
litigation  respecting  such  equitable  claims or remedies.  The forum for such
equitable  relief  shall be in either a state or  federal  court  sitting in New
York,  New York.  Each party waives any right to a trial by jury,  assuming such
right  exists  in an  equitable  proceeding,  and  irrevocably  submits  to  the
jurisdiction  of said  New  York  court.  New York  law  shall  govern  both the
proceeding as well as the  interpretation and construction of this Agreement and
the transaction as a whole.

      12.   Loss of Warrant.

      Upon receipt by the Company of evidence of the loss, theft, destruction or
mutilation of this Warrant,  and (in the case of loss,  theft or destruction) of
indemnity or security reasonably satisfactory to the Company, and upon surrender
and  cancellation of this Warrant,  if mutilated,  the Company shall execute and
deliver a new Warrant of like tenor and date.

                                       7
<PAGE>

      13.   Notice or Demands.

      Notices or demands  pursuant to this Warrant to be given or made by Holder
to or on the Company shall be sufficiently given or made if sent by certified or
registered mail, return receipt requested, postage prepaid, and addressed, until
another  address is  designated  in writing by the  Company,  to the address set
forth in Section 2(a) above.  Notices or demands  pursuant to this Warrant to be
given or made by the Company to or on Holder shall be sufficiently given or made
if sent by certified or  registered  mail,  return  receipt  requested,  postage
prepaid,  and  addressed,  to the  address of Holder set forth in the  Company's
records, until another address is designated in writing by Holder.

      IN WITNESS  WHEREOF,  the  undersigned has executed this Warrant as of the
9th day of February, 2006.

                                                     PATRIOT SCIENTIFIC CORP.

                                                     By:
                                                        ------------------------
                                                        David H. Pohl,
                                                        Chief Executive Officer

                                                     By:
                                                        ------------------------
                                                        Thomas J. Sweeney,
                                                        Chief Financial Officer

                                       8
<PAGE>

                                    EXHIBIT A

                            EXERCISE FORM FOR WARRANT

                          TO: PATRIOT SCIENTIFIC CORP.

      The  undersigned  hereby  irrevocably  exercises  the  right  to  purchase
____________  of the  shares of Common  Stock  (the  "Common  Stock") of Patriot
Scientific  Corp.,  a Delaware  corporation  (the  "Company"),  evidenced by the
attached  warrant (the  "Warrant"),  and herewith  makes payment of the exercise
price with respect to such shares in full, all in accordance with the conditions
and provisions of said Warrant.

1. The undersigned agrees not to offer,  sell,  transfer or otherwise dispose of
any  of the  Common  Stock  obtained  on  exercise  of the  Warrant,  except  in
accordance with the provisions of Section 8(a) of the Warrant.

2. The undersigned  requests that stock  certificates  for such shares be issued
free of any restrictive legend, if appropriate,  and a warrant  representing any
unexercised portion hereof be issued, pursuant to the Warrant in the name of the
undersigned and delivered to the undersigned at the address set forth below:

Dated:

--------------------------------------------------------------------------------
                                    Signature

--------------------------------------------------------------------------------
                                   Print Name

--------------------------------------------------------------------------------
                                     Address

--------------------------------------------------------------------------------

NOTICE

The  signature to the  foregoing  Exercise  Form must  correspond to the name as
written  upon the face of the  attached  Warrant  in every  particular,  without
alteration or enlargement or any change whatsoever.

--------------------------------------------------------------------------------

                                       9
<PAGE>

                                    EXHIBIT B

                                   ASSIGNMENT

                    (To be executed by the registered holder
                        desiring to transfer the Warrant)

FOR  VALUE  RECEIVED,  the  undersigned  holder  of the  attached  warrant  (the
"Warrant") hereby sells,  assigns and transfers unto the person or persons below
named the  right to  purchase  _______  shares of the  Common  Stock of  Patriot
Scientific Corp.,  evidenced by the attached Warrant and does hereby irrevocably
constitute  and appoint  _______________________  attorney to transfer  the said
Warrant  on the books of the  Company,  with full power of  substitution  in the
premises.

Dated:
      -----------------------------------            ---------------------------
                                                     Signature

Fill in for new registration of Warrant:

-----------------------------------------
                  Name

-----------------------------------------
                  Address

-----------------------------------------
Please print name and address of assignee
(including zip code number)

--------------------------------------------------------------------------------

NOTICE

The signature to the foregoing Assignment must correspond to the name as written
upon the face of the attached Warrant in every particular, without alteration or
enlargement or any change whatsoever.

--------------------------------------------------------------------------------

                                       10

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