September 28, 2006


VIA FACSIMILE & U.S. MAIL
- -------------------------

Mr. Gopal Dharia
Staff Accountant
Division of Corporation Finance
U.S. Securities & Exchange Commission
100 F Street, N.E., Mail Stop 3720
Washington, D.C.  20549

Re:      PATRIOT SCIENTIFIC CORP.
         Item  4.02(a) of Form 8-K filed on September  13,  2006,  as amended on
         September 15, 2006 File No. 0-22128

Dear Mr. Dharia:

         Thank you for your letter dated  September 19, 2006 regarding the above
8-K. Patriot Scientific  Corporation (the "Company") is in the process of having
its financial  information  re-audited by its current auditors and plans to file
its 10-KSB for the year ended May 31,  2006 on or before  October 15,  2006.  In
addition,  we plan to file our amended financial  information covering the years
ended May 31, 2002, 2003, 2004 and 2005, as soon thereafter as practicable,  and
concurrently,  if possible.  We have  included  your  comment and our  response,
below.

Accounting comments:
- --------------------

Please  disclose  in your  amended  filings  if your  certifying  officers  have
considered the effect of the error on the adequacy of your  disclosure  controls
and procedures as of the end of the years ended the previous years ended May 31,
2005,  2004,  2003 and 2002,  and the quarterly  reports for the quarters  ended
August 31, 2005,  November 30, 2005 and February 28, 2006.  Also revise Item 4.2
to disclose what effect the errors had on your current  evaluation of disclosure
controls and procedures as of the year ended May 31, 2006.

Response:
- ---------

We plan to include the following in our Report on Form 10-KSB for the year ended
May 31, 2006 in order to disclose  the effect of previous  accounting  errors on
our current  evaluation  of  disclosure  controls and  procedures as of the year
ended May 31, 2006:




          Evaluation of Disclosure Controls and Procedures

          As required by Rule  13a-15(e)  under the Exchange  Act, as of May 31,
          2006,  the end of the period to which this annual report  relates,  we
          have carried out an evaluation of the  effectiveness of the design and
          operation of the Company's  disclosure  controls and procedures.  This
          evaluation  was  carried  out  under  the  supervision  and  with  the
          participation of our management, including our Chief Executive Officer
          and our Chief Financial Officer.

          Disclosure  controls and procedures are controls and other  procedures
          that are designed to ensure that information  required to be disclosed
          in our reports filed or submitted  under the Exchange Act is recorded,
          processed,  summarized and reported, within the time periods specified
          in  the  Securities  and  Exchange   Commission's   rules  and  forms.
          Disclosure  controls  and  procedures  include,   without  limitation,
          controls and procedures  designed to ensure that information  required
          to be  disclosed  in our  reports  filed  under  the  Exchange  Act is
          accumulated  and  communicated  to  management,  including  the  Chief
          Executive Officer and Chief Financial Officer as appropriate, to allow
          timely decisions regarding required disclosure.  Management recognizes
          that any  controls  and  procedures,  no matter how well  designed and
          operated,  can provide only  reasonable  assurance of achieving  their
          objectives,   and  management  necessarily  applies  its  judgment  in
          evaluating  the  cost-benefit  relationship  of possible  controls and
          procedures.  Based on the  evaluation of our  disclosure  controls and
          procedures as of May 31, 2006, our Chief  Executive  Officer and Chief
          Financial  Officer  concluded  that, as of such date,  our  disclosure
          controls and  procedures  were not  effective due to the following two
          discrete  issues,  that pertain to material  weaknesses,  discussed in
          more detail, below.

          Notwithstanding the material weaknesses discussed below, the Company's
          management has concluded that the  consolidated  financial  statements
          included in this Annual  Report on Form 10-KSB  fairly  present in all
          material  respects  the  Company's  financial  condition,  results  of
          operations and cash flows for the periods presented in conformity with
          accounting  principles  generally  accepted  in the  United  States of
          America.

          Effect of Restatement on Disclosure Controls

          As  disclosed in Item 8B herein,  the Audit  Committee of our Board of
          Directors  authorized us to amend and restate our financial statements
          and other  financial  information for the year ended May 31, 2005, and
          the quarters  ended August 31, 2005,  November 30, 2005,  and February
          28,  2006,  as a result  of a change  in  judgment  regarding  (i) the
          accounting  treatment  for  our  previously  outstanding   convertible
          debentures  and (ii)  our  accounting  treatment  of our  interest  in
          Phoenix  Digital   Solutions,   LLC.  The  issue   pertaining  to  the
          convertible  debentures  also relates to the previous  years ended May
          31, 2004, 2003, 2002. See the Notes to the 2006 consolidated financial
          statements for more information.




          In  connection  with the  restatement,  and in light of the  change in
          judgment  which gave rise to it, our Chief  Executive  Officer and our
          Chief  Financial  Officer  considered  the  effect of the error on the
          adequacy of our  disclosure  controls and  procedures as of the end of
          the period  covered by this Annual  Report on Form 10-KSB for the year
          ended May 31, 2006. The certifying officers determined that disclosure
          controls and  procedures  were not effective as a  consequence  of the
          material weaknesses described below.

          A material weakness is a control deficiency, or combination of control
          deficiencies,  that  results in more than a remote  likelihood  that a
          material  misstatement of the annual or interim  financial  statements
          will not be  prevented or  detected.  As a result of the  restatements
          described above, the following material  weaknesses were identified in
          the Company's  assessment of the effectiveness of disclosure  controls
          and procedures as of May 31, 2006:

          i)    The  Company  did  not  maintain  effective  controls  over  the
          identification  of  a  variable  conversion  feature  and  put  option
          embedded within its convertible debt instruments and the determination
          of the appropriate accounting treatment for those debt instruments.

          ii)   The  Company  did  not  maintain  effective  controls  over  the
          accounting  for  its  investment  in  Phoenix  Digital,  LLC  and  the
          determination  of  the  appropriate   accounting   treatment  for  the
          investment.

          As a result of these weaknesses, management has taken steps, including
          the  retention  of  new  and  additional  accounting  personnel,   and
          continues to monitor the controls and  procedures,  to ensure that the
          errors will not occur again and that the Company's disclosure controls
          and  procedures are operating at the reasonable  assurance  level.  In
          addition,  management  has engaged  our current  auditors to perform a
          re-audit of the fiscal years ended May 31, 2005, 2004, 2003 (including
          the beginning balances for 2002).

We also plan to include in our amended  filings  disclosure  relating to whether
our certifying  officers have considered the effect of the error on the adequacy
of our  disclosure  controls and procedures as of the end of the years ended May
31,  2005,  2004,  2003 and 2002,  and for the  quarters  ended August 31, 2005,
November 30, 2005 and February 28, 2006.

         We  hereby  confirm  that we are  aware of our  obligations  under  the
Securities  Exchange Act of 1934 as they relate to the above referenced filings.
We acknowledge that:

o       the  Company  is  responsible  for  the  adequacy  and  accuracy  of the
        disclosure in the filing;
o       staff comments or changes to disclosure in response to staff comments do
        not foreclose the Commission  from taking any action with respect to the
        filing;  and




o       the Company may not assert staff comments as a defense in any proceeding
        initiated by the  Commission or any person under the federal  securities
        laws of the United States.

Please do not  hesitate  to  contact  me at (760)  547-2700  with any  questions
regarding this matter.

Sincerely,


/s/ Thomas J. Sweeney
- ---------------------------
Thomas J. Sweeney, Chief Financial Officer
PATRIOT SCIENTIFIC CORPORATION

 cc:     Otto E. Sorensen, Esq.
         Carrie H. Darling, Esq.