UNITED STATES SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                   FORM 10-K/A

 X       ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
         EXCHANGE ACT OF 1934

For the fiscal year ended May 29, 2005
OR

__       TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
         EXCHANGE ACT OF 1934
For the transition period from       to       .
Commission File Number: 1-6453

                       NATIONAL SEMICONDUCTOR CORPORATION
             (Exact name of registrant as specified in its charter)

        DELAWARE                        95-2095071
        --------                        ----------
        (State of incorporation)        (I.R.S. Employer Identification Number)

                    2900 SEMICONDUCTOR DRIVE, P.O. BOX 58090
                       SANTA CLARA, CALIFORNIA 95052-8090
                       ----------------------------------
                    (Address of principal executive offices)

Registrant's telephone number, including area code:  (408) 721-5000

Securities registered pursuant to Section 12(b) of the Act:

                                                Name of Each Exchange on
Title of Each Class                             Which Registered
-------------------                             ----------------

Common stock, par value                         New York Stock Exchange
$0.50 per share                                 Pacific Exchange

Preferred Stock Purchase Rights                 New York Stock Exchange
                                                Pacific Exchange






Securities registered pursuant to Section 12(g) of the Act:
None
(Title of class)



Indicate  by check  mark  whether  the  registrant:  (1) has filed  all  reports
required to be filed by Section 13 or 15(d) of the  Securities  Exchange  Act of
1934  during  the  preceding  12 months  (or for such  shorter  period  that the
registrant was required to file such reports),  and (2) has been subject to such
filing requirements for the past 90 days. Yes X . No .

Indicate by check mark if disclosure of delinquent  filers  pursuant to Item 405
of Regulation  S-K is not contained  herein,  and will not be contained,  to the
best of registrant's  knowledge,  in definitive proxy or information  statements
incorporated by reference in Part III of this Form 10-K or any amendment to this
Form 10-K. [ ]

Indicate  by check mark  whether  the  registrant  is an  accelerated  filer (as
defined in Rule 12b-2 of the Act). Yes X . No .

The aggregate market value of voting stock held by non-affiliates of National as
of  November  26,  2004,  was  approximately  $4,971,570,964  based  on the last
reported  sale price on that date.  Shares of common  stock held by each officer
and  director  and by each person who owns 5 percent or more of the  outstanding
common stock have been  excluded  because  these persons may be considered to be
affiliates.  This  determination  of  affiliate  status  for  purposes  of  this
calculation is not necessarily a conclusive determination for other purposes.

The number of shares  outstanding of the  registrant's  common stock,  $0.50 par
value, as of July 22, 2005, was 345,741,784 shares.

DOCUMENTS INCORPORATED BY REFERENCE

        Document                                        Location in Form 10-K
        --------                                        ---------------------

Portions of the Proxy Statement for the Annual Meeting of       Part III
 Stockholders to be held on or about September 30, 2005.



NATIONAL SEMICONDUCTOR CORPORATION

TABLE OF CONTENTS

                                                                         Page No
                                                                         -------

PART II

Item 6.         Selected Financial Data                                     4

PART IV

Signatures                                                                  6



ITEM 6.  SELECTED FINANCIAL DATA

EXPLANATORY NOTE

This  amendment on Form 10-K/A has been filed to correct a  typographical  error
that  disclosed the balance of total debt for the year ended May 30, 2004 in the
Five-Year Selected Financial Data table to be zero. The correct balance is $22.1
million which was correctly  disclosed in the consolidated  balance sheet at May
30, 2004 included under Item 8, Financial Statements and Supplementary Data. The
company's  consolidated financial statements included under Item 8 have not been
affected by this amendment.

The  following  selected  financial  information  has been  derived from audited
consolidated  financial  statements.  The  information  set  forth  below is not
necessarily  indicative  of results of future  operations  and should be read in
conjunction with  "Management's  Discussion and Analysis of Financial  Condition
and Results of Operations" in Item 7 and the consolidated  financial  statements
and related notes thereto in Item 8.



                                        FIVE-YEAR SELECTED FINANCIAL DATA

Years Ended
In Millions, Except Per Share Amounts and                      May 29,     May 30,     May 25,      May 26,       May 27,
      Employee Figures                                         2005        2004        2003         2002          2001
                                                               ----------- ----------- ------------ ------------- -----------
                                                                                                              
OPERATING RESULTS
Net sales                                                       $1,913.1    $1,983.1    $1,672.5     $1,494.8      $2,112.6
Operating costs and expenses                                     1,513.6     1,652.9     1,690.9      1,641.7       1,881.5
                                                               ----------- ----------- ------------ ------------- -----------
Operating income (loss)                                            399.5       330.2       (18.4)      (146.9)        231.1
Interest income, net                                                15.9        10.4        14.8         22.0          52.5
Other non-operating (expense) income, net                           (5.5)       (6.9)      (19.7)         1.5          23.5
                                                               ----------- ----------- ------------ ------------- -----------
Income (loss) before income taxes and cumulative effect of
   a change in accounting principle                                409.9       333.7       (23.3)      (123.4)        307.1
Income tax (benefit) expense                                        (5.4)       49.0        10.0         (1.5)         61.4
                                                               ----------- ----------- ------------ ------------- -----------
Income (loss) before cumulative effect of a change in
   accounting principle                                         $  415.3    $  284.7   $   (33.3)   $  (121.9)     $  245.7
                                                               =========== =========== ============ ============= ===========
Net income (loss)                                               $  415.3    $  282.8   $   (33.3)   $  (121.9)     $  245.7
                                                               =========== =========== ============ ============= ===========

Earnings (loss) per share:
Income (loss) before cumulative effect of a change in
   accounting principle:
      Basic                                                        $ 1.17      $ 0.79      $(0.09)      $(0.34)       $ 0.70
                                                               =========== =========== ============ ============= ===========
      Diluted                                                      $ 1.11      $ 0.73      $(0.09)      $(0.34)       $ 0.65
                                                               =========== =========== ============ ============= ===========
Net income (loss):
      Basic                                                        $ 1.17      $ 0.78      $(0.09)      $(0.34)       $ 0.70
                                                               =========== =========== ============ ============= ===========
      Diluted                                                      $ 1.11      $ 0.73      $(0.09)      $(0.34)       $ 0.65
                                                               =========== =========== ============ ============= ===========
Weighted-average common and potential common
    shares outstanding:
      Basic                                                        353.9       361.0       363.6        355.0         351.8
                                                               =========== =========== ============ ============= ===========
      Diluted                                                      373.9       388.5       363.6        355.0         376.8
                                                               =========== =========== ============ ============= ===========

FINANCIAL POSITION AT YEAR-END
Working capital                                                 $1,228.5    $  784.5    $  872.0     $  804.3      $  803.2
Total assets                                                    $2,504.2    $2,280.4    $2,248.4     $2,290.7      $2,362.6
Long-term debt                                                  $   23.0    $     -     $   19.9     $   20.4      $   26.2
Total debt                                                      $   23.0    $   22.1    $   22.2     $   25.9      $   55.6
Shareholders' equity                                            $2,054.1    $1,680.5    $1,706.0     $1,781.1      $1,767.9
-------------------------------------------------------------- ----------- ----------- ------------ ------------ -----------
OTHER DATA
Research and development                                        $  333.0    $  357.1    $  439.2     $  441.9      $  435.6
Capital additions                                               $   96.6    $  215.3    $  154.9     $  138.0      $  239.5
Number of employees (in thousands)                                   8.5         9.7         9.8         10.1          10.3
-------------------------------------------------------------- ----------- ----------- ------------ ------------ -----------


During fiscal 2005, we paid cash dividends of $14.1 million on our common stock.
We did not pay cash  dividends on our common stock in any of the previous  years
presented above.




                                   SIGNATURES

Pursuant to the  requirements of Section 13 or 15(d) of the Securities  Exchange
Act of 1934,  the  registrant  has duly  caused  this report to be signed on its
behalf by the undersigned, thereunto duly authorized.

                                            NATIONAL SEMICONDUCTOR CORPORATION

Date:  August 17, 2005                               /S/  BRIAN L. HALLA*
                                                     --------------------
                                                     Brian L. Halla
                                                     Chairman of the Board
                                                     and Chief Executive Officer

Pursuant to the requirements of the Securities Exchange Act of 1934, this report
has been signed below by the following  persons on behalf of the  registrant and
in the capacities stated and on the 17th day of August 2005.

Signature                                               Title

/S/  BRIAN L. HALLA*                            Chairman of the Board
     ---------------                            and Chief Executive Officer
       Brian L. Halla                           (Principal Executive Officer)

/S/  LEWIS CHEW*                                Senior Vice President, Finance
     -----------                                and Chief Financial Officer
       Lewis Chew                               (Principal Financial Officer)

/S/  JAMIE E. SAMATH *                          Corporate Controller
     -----------------                          (Principal Accounting Officer)
       Jamie E. Samath                                        

/S/  STEVEN R. APPLETON *                       Director
     --------------------      
       Steven R. Appleton

/S/  GARY P. ARNOLD *                           Director
     ----------------
       Gary P. Arnold

/S/  RICHARD J. DANZIG *                        Director
     -------------------
       Richard J. Danzig

/S/  ROBERT J. FRANKENBERG *                    Director
     -----------------------
       Robert J. Frankenberg

/S/  E. FLOYD KVAMME*                           Director
     ----------------
       E. Floyd Kvamme

/S/  MODESTO A. MAIDIQUE *                      Director
     ---------------------
       Modesto A. Maidique

/S/  EDWARD R. McCRACKEN *                      Director
     ---------------------
       Edward R. McCracken


*By     \s\ LEWIS CHEW
       ----------------------------
       Lewis Chew, Attorney-in-Fact