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

                                    FORM 10-Q

(Mark One)

[X] Quarterly report pursuant to Section 13 or 15(d) of the Securities
    Exchange Act of 1934

For the quarterly period ended: September 30, 2004 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:        0-25426
                         -------------------

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

               Delaware                                 74-1871327
- ----------------------------------------     -----------------------------------
    (State or other jurisdiction of                   (I.R.S. Employer
    incorporation or organization)                 Identification Number)
     11500 North MoPac Expressway
             Austin, Texas                                 78759
- ----------------------------------------     -----------------------------------
    (address of principal executive                      (zip code)
               offices)

       Registrant's telephone number, including area code: (512) 338-9119
                            --------------------------

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  whether  the  registrant  is an  accelerated  filer (as
defined in Rule 12b-2 of the Exchange Act). Yes [X] No [_]

Indicate the number of shares  outstanding  of each of the  issuer's  classes of
common stock, as of the latest practicable date.

                  Class                       Outstanding at October 27, 2004
     Common Stock - $0.01 par value                     79,149,984








                        NATIONAL INSTRUMENTS CORPORATION


              INDEX

                                                                        Page No.

              PART I. FINANCIAL INFORMATION

Item 1        Financial Statements:

                Consolidated Balance Sheets(unaudited)
                September 30, 2004 and December 31, 2003..................  3

                Consolidated Statements of Income (unaudited)
                Three months and nine months ended September 30, 2004
                and 2003..................................................  4

                Consolidated Statements of Cash Flows (unaudited)
                Nine months ended September 30, 2004 and 2003.............  5

                Notes to Consolidated Financial Statements................  6

Item 2        Management's  Discussion and Analysis of Financial
              Condition and Results of Operations......................... 12

Item 3        Quantitative and Qualitative Disclosures About Market Risk.. 22

Item 4        Controls and Procedures..................................... 22


              PART II. OTHER INFORMATION

Item 1        Legal Proceedings........................................... 23

Item 2        Unregistered Sales of Equity Securities and Use of Proceeds. 24

Item 5        Other Information........................................... 24

Item 6        Exhibits.................................................... 25

              Signature................................................... 26





                         PART I - FINANCIAL INFORMATION

ITEM 1. Financial Statements

                        NATIONAL INSTRUMENTS CORPORATION
                           CONSOLIDATED BALANCE SHEETS
                        (in thousands, except share data)
                                   (unaudited)

                                                     September 30,  December 31,
                                                          2004          2003
                                                     -------------  ------------
Assets
Current assets:
   Cash and cash equivalents......................   $    53,104    $   53,446
   Short-term investments.........................       147,186       141,227
   Accounts receivable, net.......................        75,921        77,970
   Inventories, net...............................        59,198        38,813
   Prepaid expenses and other current assets......        20,897         9,742
   Deferred income tax, net.......................        11,411         9,927
                                                     -------------  ------------
      Total current assets........................       367,717       331,125
Property and equipment, net.......................       150,623       151,612
Intangibles, net and other assets.................        42,360        42,414
                                                     -------------  ------------
      Total assets................................   $   560,700    $  525,151
                                                     =============  ============

Liabilities and Stockholders' Equity
Current liabilities:
   Accounts payable...............................   $    29,240    $   29,567
   Accrued compensation...........................        21,810        12,302
   Deferred revenue...............................         9,825         8,148
   Accrued expenses and other liabilities.........        13,473        16,271
   Income taxes payable...........................         1,947            --
   Other taxes payable............................         8,742         9,507
                                                     -------------  ------------
      Total current liabilities...................        85,037        75,795
Deferred income taxes.............................        10,446         9,904
                                                     -------------  ------------
      Total liabilities...........................        95,483        85,699
                                                     -------------  ------------
Commitments and contingencies
Stockholders' equity:
   Preferred stock: par value $0.01; 5,000,000
   shares authorized; 0 shares issued and
   outstanding, respectively......................            --            --
   Common Stock: par value $0.01; 180,000,000
   shares authorized; 78,690,261 and 78,269,235
   shares issued and outstanding, respectively....           787           783
Additional paid-in capital........................        94,072        95,070
Retained earnings.................................       371,615       349,994
Accumulated other comprehensive loss..............        (1,257)       (6,395)
                                                     -------------  ------------
      Total stockholders' equity..................       465,217       439,452
                                                     -------------  ------------
      Total liabilities and stockholders' equity..   $   560,700    $  525,151
                                                     =============  ============

     The accompanying notes are an integral part of these financial statements.




                        NATIONAL INSTRUMENTS CORPORATION
                        CONSOLIDATED STATEMENTS OF INCOME
                      (in thousands, except per share data)
                                   (unaudited)


                                   Three Months Ended       Nine Months Ended
                                      September 30,           September 30,
                                 ----------------------  ----------------------
                                    2004        2003        2004        2003
                                 ----------  ----------  ----------  ----------

Net sales......................  $ 125,348   $ 104,644   $ 377,113   $  303,983
Cost of sales..................     34,247      27,434      99,142       80,598
                                 ----------  ----------  ----------  -----------
     Gross profit..............     91,101      77,210     277,971      223,385
                                 ----------  ----------  ----------  -----------
Operating expenses:
   Sales and marketing.........     46,378      40,282     140,123      116,951
   Research and development....     21,737      18,370      63,072       50,497
   General and administrative..     12,949       8,800      33,386       29,040
                                 ----------  ----------  ----------  -----------
     Total operating expenses..     81,064      67,452     236,581      196,488
                                 ----------  ----------  ----------  -----------

     Operating income..........     10,037       9,758      41,390       26,897

Other income (expense):
   Interest income, net........        582         570       2,012        1,876
   Net foreign exchange
   gain (loss).................        (85)       (209)       (831)         116
   Other income, net...........         48         486         261          606
                                 ----------  ----------  ----------  -----------
Income before income taxes.....     10,582      10,605      42,832       29,495
Provision for income taxes.....      2,645       2,651      10,708        7,374
                                 ----------  ----------  ----------  -----------

      Net income...............  $   7,937   $   7,954   $  32,124   $   22,121
                                 ==========  ==========  ==========  ===========

Basic earnings per share.......  $    0.10   $    0.10   $    0.41   $     0.29
                                 ==========  ==========  ==========  ===========

Weighted average shares
outstanding-basic..............     78,671      77,298      78,637       77,202
                                 ==========  ==========  ==========  ===========

Diluted earnings per share.....  $    0.10   $    0.10   $    0.39   $     0.27
                                 ==========  ==========  ==========  ===========

Weighted average shares
outstanding-diluted............     81,749      80,898      82,209       80,579
                                 ==========  ==========  ==========  ===========

Dividends declared per share...  $    0.05   $    0.03   $    0.13   $     0.03
                                 ==========  ==========  ==========  ===========

     The accompanying notes are an integral part of these financial statements.




                        NATIONAL INSTRUMENTS CORPORATION
                      CONSOLIDATED STATEMENTS OF CASH FLOWS
                                 (in thousands)
                                   (unaudited)
                                                             Nine Months Ended
                                                               September 30,
                                                          ----------------------
                                                             2004        2003
                                                          ----------  ----------
Cash flow from operating activities:
   Net income...........................................  $  32,124   $  22,121
   Adjustments to reconcile net income to net cash
   provided by operating activities:
      Charges (benefits) to income not requiring cash:
        Depreciation and amortization...................     18,505      18,787
        Benefit from deferred income taxes..............       (937)       (514)
        Tax benefit from stock option plans.............      1,983       2,565
      Changes in operating assets and liabilities:
        Decrease (increase) in accounts receivable......      2,049      (5,332)
        Decrease (increase) in inventories..............    (20,385)        799
        Decrease (increase) in prepaid expense and
        other assets....................................     (7,262)      4,071
        Increase (decrease) in current liabilities......      9,242      (4,384)
                                                          ----------  ----------
      Net cash provided by operating activities.........     35,319      38,113
                                                          ----------  ----------

Cash flow from investing activities:
   Payment for acquisitions, net of cash received.......         --      (5,316)
   Capital expenditures.................................    (11,338)    (12,870)
   Capitalization of internally developed software......     (4,199)     (9,449)
   Additions to other intangibles.......................       (685)     (1,022)
   Purchases of short-term investments..................   (167,403)   (105,626)
   Sales and maturities of short-term investments.......    161,444      81,054
                                                          ----------  ----------
      Net cash used in investing activities.............    (22,181)    (53,229)
                                                          ----------  ----------
Cash flow from financing activities:
   Proceeds from issuance of common stock...............     11,168      11,476
   Repurchase of common stock...........................    (14,145)         --
   Dividends paid.......................................    (10,503)     (2,585)
                                                          ----------  ----------
      Net cash provided by (used in) financing
      activities........................................    (13,480)      8,891
                                                          ----------  ----------

Net decrease in cash and cash equivalents...............       (342)     (6,225)
Cash and cash equivalents at beginning of period........     53,446      40,240
                                                          ----------  ----------

Cash and cash equivalents at end of period..............  $  53,104   $  34,015
                                                          ==========  ==========

     The accompanying notes are an integral part of these financial statements.





                        NATIONAL INSTRUMENTS CORPORATION
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

NOTE 1 - Basis of Presentation

The accompanying  unaudited  consolidated financial statements should be read in
conjunction with the consolidated financial statements and notes thereto for the
year ended  December 31, 2003,  included in the Company's  annual report on Form
10-K, filed with the Securities and Exchange  Commission on January 27,2004.  In
the opinion of management,  the accompanying  consolidated  financial statements
reflect all adjustments  (consisting only of normal recurring items)  considered
necessary  to present  fairly the  financial  position of  National  Instruments
Corporation and its consolidated subsidiaries at September 30, 2004 and December
31, 2003,  and the results of  operations  for the  three-month  and  nine-month
periods ended September 30, 2004 and 2003, and the cash flows for the nine-month
periods ended September 30, 2004 and 2003. Operating results for the three-month
and nine-month  periods ended September 30, 2004 are not necessarily  indicative
of the results that may be expected for the year ending December 31, 2004.

NOTE 2 - Earnings Per Share

Basic  earnings  per share  ("EPS") is computed  by  dividing  net income by the
weighted average number of common shares outstanding during each period. Diluted
EPS is computed by dividing net income by the weighted  average number of common
shares and common  share  equivalents  outstanding  (if  dilutive)  during  each
period.  Common share  equivalents  include stock options.  The number of common
share  equivalents  outstanding  relating to stock options is computed using the
treasury stock method.

The  reconciliation  of the denominators used to calculate basic EPS and diluted
EPS for the  three-month  and  nine-month  periods ended  September 30, 2004 and
2003, respectively, are as follows (in thousands):

                                    Three Months Ended      Nine Months Ended
                                       September 30,           September 30,
                                  ----------------------  ----------------------
                                        (unaudited)             (unaudited)
                                     2004        2003        2004        2003
                                  ----------  ----------  ----------  ----------

Weighted average shares
outstanding-basic...............     78,671      77,298      78,637      77,202
Plus: Common share equivalents
   Stock options................      3,078       3,600       3,572       3,377
                                  ----------  ----------  ----------  ----------
Weighted average shares
outstanding-diluted.............     81,749      80,898      82,209      80,579
                                  ==========  ==========  ==========  ==========

Stock options to acquire  3,062,000 and 2,079,000  shares for the quarters ended
September 30, 2004 and 2003,  respectively,  and 1,773,000 and 2,255,000  shares
for the nine  months  ended  September  30,  2004 and 2003,  respectively,  were
excluded  from the  computations  of diluted EPS because the effect of including
the stock options would have been anti-dilutive.

NOTE 3 - Inventories, net

Inventories, consist of the following (in thousands):
                                      September 30,   December 31,
                                          2004            2003
                                     ------------------------------
                                               (unaudited)
                                     ------------------------------
Raw materials......................  $    23,595     $    17,513
Work-in-process....................        3,489           1,625
Finished goods.....................       32,114          19,675
                                     --------------  --------------
                                     $    59,198     $    38,813
                                     ==============  ==============






NOTE 4 - Comprehensive Income

The Company's  comprehensive income is comprised of net income, foreign currency
translation and unrealized  gains and losses on forward and option contracts and
securities  available for sale.  Comprehensive  income for the  three-month  and
nine-month  periods  ended  September  30,  2004  and 2003  was as  follows  (in
thousands):

                                    Three Months Ended      Nine Months Ended
                                      September 30,           September 30,
                                  ----------------------  ----------------------
                                       (unaudited)             (unaudited)
                                     2004        2003        2004        2003
                                  ----------  ----------  ----------  ----------
Comprehensive income:
  Net income....................  $   7,937   $   7,954   $  32,124   $  22,121
  Foreign currency translation..        393         951        (223)      3,116
  Unrealized gains (losses) on
  derivative instruments........        362        (558)      5,651      (1,920)
  Unrealized losses on available
  for sale securities...........        135         (32)       (290)        (91)
                                  ----------  ----------  ----------  ----------
Total comprehensive income......  $   8,827   $   8,315   $  37,262   $  23,226
                                  ==========  ==========  ==========  ==========

NOTE 5 - Stock-Based Compensation Plans

The Company has two active stock-based compensation plans and one inactive plan.
The two active  stock-based  compensation  plans are the 1994 Incentive Plan and
the  Employee  Stock  Purchase  Plan.  The Company  follows the  disclosure-only
provisions of SFAS No. 123, Accounting for Stock-Based Compensation,  as amended
by SFAS No. 148,  Accounting  for  Stock-Based  Compensation  -  Transition  and
Disclosure.  As allowed by SFAS No.  123,  the  Company  continues  to apply the
provisions of Accounting  Principles Board Opinion No. 25,  Accounting for Stock
issued to Employees,  and related  interpretations  in accounting for its plans.
Accordingly,  compensation  cost for stock options is measured as the excess, if
any, of the quoted market price of the Company's  stock at the date of the grant
over the amount an employee must pay to acquire the stock. No compensation  cost
has been recognized in the Company's  financial  statements for the stock option
plan and the stock  purchase  plan. If  compensation  cost for the Company's two
active stock-based compensation plans were determined based on the fair value at
the  grant  date for  awards  under  those  plans  consistent  with  the  method
established  by SFAS No. 123,  the  Company's  net income and earnings per share
would  approximate the pro-forma  amounts below (in thousands,  except per share
data):

                                    Three Months Ended      Nine Months Ended
                                      September 30,           September 30,
                                  ----------------------  ----------------------
                                       (unaudited)             (unaudited)
                                     2004        2003        2004        2003
                                  ----------  ----------  ----------  ----------
Net income, as reported.......... $   7,937   $   7,954   $  32,124   $  22,121
Stock-based compensation
included inreported net income,
net of related tax effects.......        --          --          --          --
Total stock-based compensation
expense determined under fair
value method for all awards,
net of related tax effects.......    (4,009)     (2,928)     (9,524)     (9,599)
                                  ----------  ----------  ----------  ----------
Pro-forma net income............. $   3,928   $   5,026   $  22,600   $  12,522
                                  ----------  ----------  ----------  ----------

Earnings per share:
Basic - as reported.............. $    0.10   $    0.10   $    0.41   $    0.29
Basic - pro-forma................ $    0.05   $    0.07   $    0.29   $    0.16
Diluted - as reported............ $    0.10   $    0.10   $    0.39   $    0.27
Diluted - pro-forma.............. $    0.05   $    0.06   $    0.27   $    0.16





NOTE 6 - Authorized Preferred Stock and Preferred Stock Purchase Rights Plan

National  Instruments  has 5,000,000  authorized  shares of preferred  stock. On
January 21,  2004,  the Board of Directors  of National  Instruments  designated
750,000 of these shares as Series A Participating Preferred Stock in conjunction
with its adoption of a Preferred Stock Rights Agreement (the "Rights Agreement")
and  declaration of a dividend of one preferred share purchase right (a "Right")
for each share of common  stock  outstanding  held as of May 10,  2004 or issued
thereafter. Each Right will entitle its holder to purchase one one-thousandth of
a share of National  Instruments'  Series A Participating  Preferred Stock at an
exercise price of $200, subject to adjustment, under certain circumstances.  The
Rights Agreement was not adopted in response to any effort to acquire control of
National Instruments.

The Rights only become  exercisable in certain limited  circumstances  following
the tenth day after a person or group announces acquisitions of or tender offers
for 20% or more of  National  Instruments'  common  stock.  In  addition,  if an
acquirer  (subject to certain  exclusions for certain  current  stockholders  of
National  Instruments,  an "Acquiring  Person")  obtains 20% or more of National
Instruments'  common  stock,  then each Right (other than the Rights owned by an
Acquiring Person or its affiliates) will entitle the holder to purchase, for the
exercise price, shares of National Instruments common stock having a value equal
to two times the  exercise  price.  Under  certain  circumstances,  the National
Instruments'  Board of  Directors  may redeem the Rights,  in whole,  but not in
part,  at a  purchase  price of $0.01  per  Right.  The  Rights  have no  voting
privileges  and  are  attached  to  and   automatically   traded  with  National
Instruments  common stock until the occurrence of specified trigger events.  The
Rights  will  expire  on the  earlier  of May 10,  2014 or the  exchange  or the
redemption of the Rights.

NOTE 7 - Commitments and Contingencies

The Company offers a one or two-year limited warranty on most hardware  products
and a 90-day warranty on software products, which is included in the sales price
of many of its products.  Provision is made for estimated  future warranty costs
at the time of sale.

The warranty reserve was as follows (in thousands):

                                                      Nine Months Ended
                                                        September 30,
                                                   ----------------------
                                                         (unaudited)
                                                      2004        2003
                                                   ----------  ----------
Balance at the beginning of the period...........  $    715    $    715
Accruals for warranties issued during the
period...........................................     1,137         805
Settlements made (in cash or in kind) during
the period.......................................    (1,037)       (805)
                                                   ----------  ----------
Balance at the end of the period.................  $    815    $    715
                                                   ==========  ==========

As of September 30, 2004, the Company has outstanding  guarantees for payment of
foreign leases,  customs and foreign grants totaling approximately $4.0 million.
The terms of the guarantees are for up to 40 months.

As of September 30, 2004, the Company has  non-cancelable  purchase  commitments
with various suppliers of customized inventory and inventory components totaling
approximately $5.5 million over the next twelve months.





NOTE 8 - Segment Information

While the Company sells its products to many different  markets,  its management
has chosen to organize  the  Company by  geographic  areas,  and as a result has
determined that it has one reportable segment. Substantially all of the interest
income,  interest  expense,  depreciation  and  amortization  is recorded in the
Americas. Net sales, operating income and identifiable assets, classified by the
major  geographic  areas in which  the  Company  operates,  are as  follows  (in
thousands):

                                    Three Months Ended       Nine Months Ended
                                       September 30,           September 30,
                                  ----------------------  ----------------------
                                        (unaudited)             (unaudited)
                                     2004        2003        2004        2003
                                  ----------  ----------  ----------  ----------
Net sales:
Americas:
  Unaffiliated customer sales...  $  62,636   $  50,828   $ 182,744   $ 147,049
  Geographic transfers..........     21,119      15,803      63,228      42,933
                                  ----------  ----------  ----------  ----------
                                  $  83,755   $  66,631   $ 245,972   $ 189,982
                                  ----------  ----------  ----------  ----------

Europe:
  Unaffiliated customer sales...  $  36,372   $  31,701   $ 116,623   $  94,154
  Geographic transfers..........     40,721      14,195      73,590      37,212
                                  ----------  ----------  ----------  ----------
                                  $  77,093   $  45,896   $ 190,213   $ 131,366
                                  ----------  ----------  ----------  ----------

Asia Pacific:
  Unaffiliated customer sales...  $  26,340   $  22,115   $  77,746   $  62,780
                                  ----------  ----------  ----------  ----------
Eliminations....................    (61,840)    (29,998)   (136,818)    (80,145)
                                  ----------  ----------  ----------  ----------
                                  $ 125,348   $ 104,644   $ 377,113   $ 303,983
                                  ==========  ==========  ==========  ==========

                                    Three Months Ended       Nine Months Ended
                                       September 30,           September 30,
                                  ----------------------  ----------------------
                                        (unaudited)             (unaudited)
                                     2004        2003        2004        2003
                                  ----------  ----------  ----------  ----------
Operating income:
Americas........................  $  11,569   $   9,787   $  40,744   $  25,022
Europe..........................     10,571       9,695      35,187      27,304
Asia Pacific....................      9,634       8,646      28,531      25,068
Unallocated:
Research and development
expenses........................    (21,737)    (18,370)    (63,072)    (50,497)
                                  ----------  ----------  ----------  ----------
                                  $  10,037   $   9,758   $  41,390   $  26,897
                                  ==========  ==========  ==========  ==========

                                  September 30,    December 31,
                                      2004             2003
                                  -----------------------------
                                           (unaudited)
                                  -----------------------------
Identifiable assets:
Americas........................  $   437,789      $   420,082
Europe..........................       78,059           77,963
Asia Pacific....................       44,852           27,106
                                  ------------     ------------
                                  $   560,700      $   525,151
                                  ============     ============






Total  sales  outside the United  States for the  quarter and nine months  ended
September 30, 2004 were $68.3 million and $211.7 million,  respectively, and for
the quarter  and nine months  ended  September  30, 2003 were $58.3  million and
$170.4 million, respectively.

NOTE 9 - Litigation

The Company has filed two complaints against The MathWorks,  Inc.  ("MathWorks")
for patent infringement.  In both complaints,  the Company claimed the MathWorks
infringes certain of its U.S. patents and the MathWorks  challenged the validity
and  enforceability  of those  patents and asserts that it does not infringe the
claims of those patents.

The first  complaint was filed on January 25, 2001 in the U.S.  District  Court,
Eastern  District of Texas  (Marshall  Division).  On January 30, 2003, the jury
found infringement by the MathWorks of three of the patents involved and awarded
the Company  specified  damages.  On June 23, 2003,  the District  Court entered
final judgment in favor of the Company in an amount of  approximately $4 million
and entered an injunction  against  MathWorks'  sale of its Simulink and related
products.  The District Court stayed the  injunction  pending appeal of the case
and required the MathWorks to pay a specified  royalty on its U.S.  sales of the
same  products  during the  pendency  of appeal.  The initial  judgment  and the
royalties on the sales of infringing  products  through June 30, 2004 total $6.9
million  and are  escrowed.  On July 22,  2003,  MathWorks  filed its  Notice of
Appeal.  On September 3, 2004, the U.S. Court of Appeal for the Federal  Circuit
affirmed the District  Court's  final  judgment and  injunction in all respects.
Subsequently  on October 14,  2004,  the  District  Court lifted its stay of the
injunction so as to place into effect the  injunction  against  MathWorks'  U.S.
sales of its  Simulink  and related  products.  The final  judgment has not been
recorded in the financial statements of the Company pending release of the funds
from escrow.

On September 22, 2004,  MathWorks  filed a complaint  against the Company in the
U.S.  District Court,  Eastern District of Texas (Marshall  Division),  claiming
that on that day it had released  modified  versions of its Simulink and related
product and seeking a  declaratory  judgment  that the modified  products do not
infringe the three patents  adjudged  infringed in the District Court's decision
on June 23,  2003,  and  affirmed by the Court of Appeals on  September 3, 2004.
MathWorks  has not  served  the  complaint,  nor has the  Company  answered  the
complaint. The Company has publicly stated its position that MathWorks' modified
products do not avoid the  injunction.  The Company has also publicly  announced
its  intent to file a motion  asking the  District  Court to hold  MathWorks  in
contempt for violating the  injunction.  It is also the Company's  position that
this dispute over MathWorks' modified products should be resolved in the context
of the Company's  planned  motion for contempt,  rather than in a new lawsuit as
sought by MathWorks by way of its complaint filed on September 22, 2004.

The second  complaint  was filed  October 21,  2002,  also in the U.S.  District
Court, Eastern District of Texas (Marshall Division) and on August 27, 2003, the
complaint was dismissed by agreement of the parties.


On January 15, 2003,  SoftWIRE  Technology,  LLC  ("SoftWIRE")  and  Measurement
Computing  Corporation ("MCC") filed a complaint against the Company in the U.S.
District  Court for the  District of  Massachusetts  asking the court to declare
that SoftWIRE does not infringe  certain of the Company's U.S.  patents and that
such patents are invalid and  unenforceable.  On February 21, 2003,  the Company
filed a complaint against SoftWIRE and MCC in the U.S.  District Court,  Eastern
District  of Texas  (Marshall  Division)  claiming  that both  SoftWIRE  and MCC
infringe the same and certain other of the Company's U.S. patents.  SoftWIRE and
MCC challenge the validity and  enforceability  of these patents and assert that
they do not infringe any of these patents.  In the Eastern District action,  the
Company seeks monetary damages and injunction of the sale of certain products of
SoftWIRE and MCC as well as  attorney's  fees and costs.  By order of the Court,
the Eastern  District action was transferred to the U.S.  District Court for the
District of  Massachusetts  on May 9, 2003, and has been  consolidated  with the
previously-filed  SoftWIRE  action,  which also  includes  counterclaims  by the
Company that are the same in substance  as the  Company's  claims in the Eastern
District  action.  On June 12,  2003,  SoftWIRE  moved  for  leave to amend  its
complaint in order to allege that the Company  infringes  two U.S.  patents that
SoftWIRE  acquired by purchase on May 23, 2003.  On November 5, 2003,  the Court
granted SoftWIRE's motion to amend, thereby adding SoftWIRE's two patents to the
litigation.  With respect to those two SoftWIRE patents, SoftWIRE seeks monetary
damages and injunction of the sale of the Company's  LabVIEW software  products,
as well as  attorney's  fees and costs.  The Company  challenges  the  validity,
enforceability  and  alleged  infringement  of  those  patents  and  intends  to
vigorously defend against SoftWIRE's claims. Discovery in the litigation remains
underway and is expected to continue  through  2005. No trial date has been set.
During the fourth quarter of 2003, the Company  accrued $3.8 million  related to
its probable loss from this  contingency,  which consists  solely of anticipated
patent defense costs that are probable of being incurred. On October 6, 2004 the
court  extended  the  discovery  period  through  2005.  Because of the extended
discovery  period,  the Company  estimates that  additional  legal costs will be
incurred.  Accordingly,  during the third quarter of 2004 the Company  increased
its accrual for these additional patent defense costs that are probable of being
incurred by $2.5 million.  However,  the outcome of any litigation is inherently
uncertain  and there can be no  assurance  as to the  ultimate  outcome  of this
matter or any other litigation.  The Company charged  approximately $1.1 million
against this accrual during the third quarter of 2004. The Company has charged a
total of $2.4 million against this accrual through September 30, 2004.

NOTE 10 - Subsequent Event

The Company's Board of Directors  approved on October 20, 2004, a quarterly cash
dividend  of  $0.05  per  common  share,   payable  on  November  29,  2004,  to
shareholders of record on November 8, 2004.





Item 2. Management's  Discussion and Analysis of Financial Condition and Results
of Operations

     This  Quarterly  Report on Form 10-Q  contains  forward-looking  statements
within the meaning of Section 27A of the  Securities Act of 1933 and Section 21E
of the  Securities  Exchange  Act  of  1934.  Any  statements  contained  herein
regarding  the  future  financial  performance  or  operations  of  the  Company
(including,  without  limitation,  statements  to the  effect  that the  Company
"believes,"  "expects,"  "plans,"  "may," "will,"  "projects,"  "continues,"  or
"estimates"  or  other  variations  thereof  or  comparable  terminology  or the
negative  thereof)  should  be  considered  forward-looking  statements.  Actual
results  could differ  materially  from those  projected in the  forward-looking
statements  as a result of a number of important  factors.  For a discussion  of
important factors that could affect the Company's  results,  please refer to the
Market Risk section,  the Factors Affecting the Company's Business and Prospects
section and financial  statement line item discussions  below.  Readers are also
encouraged  to refer to the  documents  regularly  filed by the Company with the
Securities  and Exchange  Commission,  including the Company's  Annual Report on
Form  10-K for  further  discussion  of the  Company's  business  and the  risks
attendant thereto.

Overview

     National   Instruments   designs,   develops,   manufactures   and  markets
instrumentation  and  automation  software and hardware for general  commercial,
industrial and scientific applications.  The Company offers hundreds of products
used to create virtual  instrumentation  systems for measurement and automation.
The Company has identified a large and diverse  market for test and  measurement
("T&M") and industrial  automation ("IA")  applications.  The Company's products
are  used  in a  variety  of  applications  from  research  and  development  to
production testing, monitoring and industrial control. In T&M applications,  the
Company's products can be used to monitor and control traditional instruments or
to create computer-based  instruments that can replace traditional  instruments.
In IA  applications,  the Company's  products can be used in the same ways as in
test and measurement and can also be used to integrate measurement functionality
with process  automation  capabilities.  The Company  sells to a large number of
customers in a wide variety of industries. No single customer accounted for more
than 3% of the Company's sales in 2003, 2002 or 2001.

     The Company has been  profitable in every year since 1990.  However,  there
can be no assurance  that the  Company's net sales will grow or that the Company
will remain  profitable in future  periods.  As a result,  the Company  believes
historical  results of operations  should not be relied upon as  indications  of
future performance.





Results of Operations

     The following table sets forth, for the periods  indicated,  the percentage
of  net  sales   represented  by  certain  items   reflected  in  the  Company's
consolidated statements of income:

                                          Three Months Ended   Nine Months Ended
                                             September 30,       September 30,
                                          ------------------  ------------------
                                            2004      2003      2004      2003
                                          --------  --------  --------  --------
Net sales:
   Americas                                 50.0%     48.6%     48.5%     48.4%
   Europe                                   29.0      30.3      30.9      31.0
   Asia Pacific                             21.0      21.1      20.6      20.6
                                          --------  --------  --------  --------
   Consolidated net sales                  100.0     100.0     100.0     100.0
Cost of sales                               27.3      26.2      26.3      26.5
                                          --------  --------  --------  --------
   Gross profit                             72.7      73.8      73.7      73.5
                                          --------  --------  --------  --------
Operating expenses:
   Sales and marketing                      37.0      38.5      37.2      38.5
   Research and development                 17.3      17.6      16.7      16.6
   General and administrative               10.4       8.4       8.8       9.6
                                          --------  --------  --------  --------
   Total operating expenses                 64.7      64.5      62.7      64.7
                                          --------  --------  --------  --------
     Operating income                        8.0       9.3      11.0       8.8
Other income (expense):
   Interest income, net                      0.5       0.5       0.5       0.6
   Net foreign exchange gain (loss)         (0.1)     (0.2)     (0.2)      0.1
   Other income, net                         0.0       0.5       0.1       0.2
                                          --------  --------  --------  --------
Income before income taxes                   8.4      10.1      11.4       9.7
Provision for income taxes                   2.1       2.5       2.9       2.4
                                          --------  --------  --------  --------

   Net income                                6.3%      7.6%      8.5%      7.3%
                                          ========  ========  ========  ========

     Net Sales. Consolidated net sales increased by $20.7 million or 20% for the
three months ended  September 30, 2004 to $125.3 million from $104.6 million for
the three months ended September 30, 2003, and increased $73.1 million or 24% to
$377.1 million for the nine months ended  September 30, 2004 from $304.0 million
for the  comparable  period in the prior  year.  The Company  believes  that the
increases in sales for the three and nine months ended  September  30, 2004 were
primarily  attributable to the  introduction of new and upgraded  products,  the
increase in unit volume from the  increased  market  acceptance of the Company's
products in all regions and the  strength of the euro.  Sales in the Americas in
the third  quarter of 2004  increased by 23% from the third  quarter of 2003 and
sales in the Americas for the nine months ended  September 30, 2004 increased by
24% from the nine months ended September 30, 2003.

     Sales outside of the Americas,  as a percentage of  consolidated  sales for
the  quarter  ended  September  30, 2004  decreased  to 50.0% from 51.4% for the
quarter ended  September 30, 2003 as a result of stronger sales in the Americas.
Sales outside of the Americas as a percentage of consolidated sales for the nine
months ended  September 30, 2004 decreased to 51.5% from 51.6% in the comparable
2003  period as a result of  stronger  sales in the  Americas.  Compared  to the
corresponding  periods in 2003, the Company's European sales increased by 15% to
$36.4 million for the quarter  ended  September 30, 2004 and increased by 24% to
$116.6  million for the nine months  ended  September  30,  2004.  Sales in Asia
Pacific  increased by 19% to $26.3 million for the quarter  ended  September 30,
2004  compared to the same period in 2003 and increased 24% to $77.7 million for
the nine months ended  September  30, 2004  compared to the same period in 2003.
The Company  expects  sales  outside of North America to continue to represent a
significant  portion of its revenue.  The Company  intends to continue to expand
its  international  operations by increasing  its presence in existing  markets,
adding a presence in some new  geographical  markets and  continuing  the use of
distributors to sell its products in some countries.


     Sales made by the Company's direct sales offices in Europe and Asia Pacific
are denominated in local currencies, and accordingly, the U.S. dollar equivalent
of these sales is affected by changes in the foreign  currency  exchange  rates.
Between the third quarter of 2003 and the third quarter of 2004,  net of hedging
results,  the  change in the  exchange  rates had the effect of  increasing  the
Company's  consolidated  sales  by 4%;  increasing  European  sales  by 10%  and
increasing  sales in Asia Pacific by 3%. For 2004,  year-to-date  sales,  net of
hedging  results,  the change in exchange rates had the effect of increasing the
Company's  consolidated sales by 6%. The increase in sales in Europe and Asia as
a result of the change in exchange rates was partially offset by the decrease in
local  currency  product  pricing in each  region.  Since most of the  Company's
international  operating  expenses are also  incurred in local  currencies,  the
change in exchange  rates had the effect of increasing  operating  expenses $4.5
million, or 3%, for the nine months ended September 30, 2004 and by $800,000, or
2%, for the quarter ended  September 30, 2004 compared to the  comparable  prior
year periods.

     Gross Profit. As a percentage of net sales, gross profit decreased to 72.7%
for the third  quarter of 2004 from 73.8% for the third  quarter of 2003 and for
the first nine  months of 2004  remained  relatively  constant  at 73.7% for the
first nine  months of 2004  compared to 73.5% for the first nine months of 2003.
The decrease in the gross margin for the third  quarter of 2004  compared to the
comparable prior year period is primarily attributable to the unfavorable impact
of fixed charges  relative to sales volume,  partially  offset by the effects of
favorable  foreign  currency  exchange rates and the favorable  impact of higher
sales  volume.  There can be no  assurance  that the Company  will  maintain its
historical margins. The Company believes its current  manufacturing  capacity is
adequate to meet current needs.

     Sales and Marketing.  Sales and marketing expenses for the third quarter of
2004 increased to $46.4 million,  a 15% increase,  compared to the third quarter
of 2003 and  increased  20% to $140.1  million for the first nine months of 2004
from the  comparable  2003  period.  As a  percentage  of net  sales,  sales and
marketing  expenses  were 37.0% and 38.5% for the quarters  ended  September 30,
2004 and 2003,  respectively,  and 37.2%  and  38.5% for the nine  months  ended
September 30, 2004 and 2003, respectively.  Approximately 80% of the increase in
sales and marketing  expenses for the quarter ended  September 30, 2004 from the
prior year period is attributable to increases in sales and marketing  personnel
costs due to the  increase in sales and  marketing  personnel,  the  increase in
variable  compensation  from  higher  sales  volume and from the  effects of the
change in currency exchange rates,  with the remaining  fraction of the increase
attributable  to  increases  in  advertising,  tradeshows  and  special  events.
Approximately  60% of the increase in sales and marketing  expenses for the nine
months ended  September 30, 2004 from the prior year period is  attributable  to
the increase in sales and marketing personnel costs due to the increase in sales
and marketing personnel, the increase in variable compensation from higher sales
volume and from the effects of the change in currency  exchange rates,  with the
remaining  fraction of the increase  attributable  to increases in  advertising,
tradeshows and special events.  The Company expects sales and marketing expenses
in future  periods to  increase  in  absolute  dollars,  and to  fluctuate  as a
percentage  of sales based on  recruiting,  initial  marketing  and  advertising
campaign  costs  associated  with major new product  releases and entry into new
market areas, investment in web sales and marketing efforts,  increasing product
demonstration costs and the timing of domestic and international conferences and
trade shows.

     Research and Development.  Research and development  expenses  increased to
$21.7  million  for the quarter  ended  September  30,  2004,  an 18%  increase,
compared to $18.4  million for the three months ended  September  30, 2003,  and
increased 25% to $63.1 million for the nine months ended September 30, 2004 from
$50.5  million in the  comparable  2003 period.  As a  percentage  of net sales,
research  and  development  expenses  represented  17.3% and 17.6% for the third
quarters ended  September 30, 2004 and 2003,  respectively,  and 16.7% and 16.6%
for the nine  months  ended  September  30,  2004 and  2003,  respectively.  The
increase in research and  development  costs in absolute  amounts in each period
and as a percentage  of sales for the nine months ended  September 30, 2004 from
the prior year period is primarily due to increases in personnel  costs from the
hiring of additional product development  engineers and from the decrease in the
capitalization  of software  development  costs.  The Company  plans to continue
making a significant  investment in research and  development in order to remain
competitive and support revenue growth.

     The Company capitalizes  software development costs in accordance with SFAS
No. 86,  Accounting for the Costs of Computer  Software to be Sold,  Leased,  or
Otherwise Marketed.  The Company amortizes such costs over the related product's
estimated economic useful life, generally three years,  beginning when a product
becomes  available for general release.  Software  amortization  expense totaled
$2.0  million and $1.8  million for the quarters  ended  September  30, 2004 and
2003,  respectively,  and $5.6 million and $4.0  million  during the nine months
ended  September 30, 2004 and 2003,  respectively.  Software  development  costs
capitalized  were $786,000 and $1.0 million for the quarters ended September 30,
2004 and 2003,  respectively,  and $4.2  million and $9.4  million for the first
nine months of 2004 and 2003, respectively.


     General and  Administrative.  General and  administrative  expenses for the
quarter  ended  September  30, 2004  increased  47% to $12.9  million  from $8.8
million for the comparable prior year period. For the first nine months of 2004,
general and  administrative  expenses  increased 15% to $33.4 million from $29.0
million for the first nine months of 2003. As a percentage of net sales, general
and  administrative  expenses increased to 10.4% for the quarter ended September
30, 2004 from 8.4% for the third  quarter of 2003.  During the first nine months
of 2004, general and administrative  expenses decreased as a percentage of sales
to 8.8% from 9.6% in the comparable prior year period.  The increases in general
and administrative expenses in absolute amounts and as a percentage of sales for
the quarter ended  September 30, 2004 from the comparable  prior year period are
attributable to increased litigation costs of $2.2 million,  associated with the
SoftWIRE  patent  defense  lawsuit  (See  Note  9 -  Litigation)  and  increased
personnel costs. The increase in general and administrative expenses in absolute
amounts for the nine month period ended  September 30, 2004 from the  comparable
prior year period is primarily  attributable  to  unfavorable  foreign  exchange
rates and increased  international  personnel costs. The decrease in general and
administrative  expenses  as a  percentage  of sales for the nine  months  ended
September  30,  2004  from  the  comparable  prior  year  period  was  primarily
attributable  to higher  sales  volume.  The Company  expects  that  general and
administrative expenses in future periods will fluctuate in absolute amounts and
as a percentage of revenue.

     Interest  Income,  Net.  Net interest  income in the third  quarter of 2004
increased to $582,000  from  $570,000 in the third quarter of 2003 and increased
to $2.0  million  for the first nine  months of 2004 from $1.9  million  for the
comparable  2003 period.  The  increases in interest  income for the quarter and
nine months  ended  September  30, 2004 were due to higher  yields on  increased
invested funds.  The primary source of interest income is from the investment of
the Company's cash.

     Net Foreign  Exchange  Gain  (Loss).  The Company  experienced  net foreign
exchange  losses of $85,000 in the third  quarter of 2004  compared to losses of
$209,000 in the third quarter of 2003. Net foreign  exchange  losses of $831,000
were  recognized for the first nine months of 2004 compared to gains of $116,000
for the first nine months of 2003.  These results are  attributable to movements
between  the U.S.  dollar and the local  currencies  in  countries  in which the
Company's  sales  subsidiaries  are located.  The Company  recognizes  the local
currency as the functional currency of its international subsidiaries.

     The Company utilizes foreign currency forward contracts to hedge a majority
of its foreign currency-denominated  receivables in order to reduce its exposure
to significant foreign currency  fluctuations.  The Company typically limits the
duration of its "receivables" foreign currency forward contracts to 90 days.

     The Company also utilizes foreign  currency  forward  contracts and foreign
currency  purchased  option  contracts  in  order  to  reduce  its  exposure  to
fluctuations in future foreign currency cash flows. The Company  purchases these
contracts  for up to 100% of its  forecasted  cash flows in selected  currencies
(primarily  the euro,  yen and pound  sterling) and limits the duration of these
contracts to 40 months.  The foreign  currency  purchased  option  contracts are
purchased  "at-the-money"  or  "out-of-the-money."  As a result,  the  Company's
hedging  activities  only  partially  address  its  risks  in  foreign  currency
transactions,  and  there  can  be no  assurance  that  this  strategy  will  be
successful.  The Company does not invest in contracts for speculative  purposes.
The Company's  hedging  strategy  reduced the foreign exchange gains by $497,000
during the quarter ended September 30, 2004, and increased the foreign  exchange
losses by $271,000 for the nine months ended September 30, 2004.

     Provision  for Income Taxes.  The  provision  for income taxes  reflects an
effective tax rate of 25% for the three and nine months ended September 30, 2004
and 25% for the three and nine months ended  September  30, 2003.  The Company's
effective  tax  rate is  lower  than  the  U.S.  federal  statutory  rate of 35%
primarily  as a result  of the  extraterritorial  income  exclusion,  tax-exempt
interest and reduced tax rates in certain foreign jurisdictions.

Liquidity and Capital Resources

     The Company is currently financing its operations and capital  expenditures
through  cash flow from  operations.  At  September  30,  2004,  the Company had
working capital of  approximately  $282.7 million  compared to $255.3 million at
December 31, 2003. Net cash provided by operating  activities for the nine month
periods  ended  September  30,  2004 and 2003  totaled  $35.3  million and $38.1
million, respectively.

     Accounts  receivable  decreased to $75.9 million at September 30, 2004 from
$78.0 million at December 31, 2003.  Days sales  outstanding  decreased to 59 at
September 30, 2004 compared to 60 at September 30, 2003.  Consolidated inventory
balances  increased to $59.2 million at September 30, 2004 from $38.8 million at
December 31, 2003.  The increase in inventory  was due to a planned  increase in
safety stock.  Inventory turns of 2.3 at September 30, 2004 represent a decrease
from turns of 2.8 at September  30, 2003.  Cash used in the first nine months of
2004 for the purchase of property and equipment  totaled $11.3 million,  for the
capitalization of internally  developed software costs totaled $4.2 million, and
for additions to other intangibles totaled $685,000. Cash used in the first nine
months of 2003 for the purchase of property and equipment totaled $12.9 million,
for the  capitalization  of  internally  developed  software  costs totaled $9.4
million,  acquisitions  totaled $5.3 million and additions to other  intangibles
totaled $1.0 million.


     Cash  provided by the issuance of common stock  totaled  $11.2  million and
$11.5  million  for the first nine  months of 2004 and 2003,  respectively.  The
issuance of common stock was to employees  under the  Company's  Employee  Stock
Purchase Plan and 1994  Incentive  Plan.  Cash used for the repurchase of common
stock  totaled  $14.1 million and $0 for the first nine months of 2004 and 2003,
respectively.  Cash used for the payment of dividends  totaled $10.5 million and
$2.6 million for the first nine months of 2004 and 2003, respectively.

     The Company currently expects to fund expenditures for capital requirements
as well as  liquidity  needs  created  by  changes  in  working  capital  from a
combination of available cash and short-term  investment balances and internally
generated  funds.  As of  September  30, 2004 and 2003,  the Company had no debt
outstanding.  The Company believes that its cash flow from  operations,  if any,
existing cash balances and short-term investments will be sufficient to meet its
cash  requirements  for at least the next twelve months.  Cash  requirements for
periods   beyond  the  next  twelve   months   will  depend  on  the   Company's
profitability,  its ability to manage working capital  requirements and its rate
of growth.

Financial Risk Management

     The Company's  international sales are subject to inherent risks, including
fluctuations in local  economies;  difficulties in staffing and managing foreign
operations;  greater  difficulty in accounts  receivable  collection;  costs and
risks of  localizing  products  for  foreign  countries;  unexpected  changes in
regulatory requirements,  tariffs and other trade barriers;  difficulties in the
repatriation of earnings and burdens of complying with a wide variety of foreign
laws.  The Company's  sales outside of North  America are  denominated  in local
currencies, and accordingly, the Company is subject to the risks associated with
fluctuations  in currency  rates.  In particular,  increases in the value of the
dollar  against  foreign  currencies  decrease the U.S.  dollar value of foreign
sales  requiring the Company either to increase its price in the local currency,
which could render the Company's  product  prices  noncompetitive,  or to suffer
reduced revenues and gross margins as measured in U.S.  dollars.  These dynamics
have  adversely  affected  revenue growth in  international  markets in previous
years.  The Company's  foreign  currency  hedging program  includes both foreign
currency forward and purchased option contracts to reduce the effect of exchange
rate  fluctuations.  However,  the hedging program will not eliminate all of the
Company's foreign exchange risks. (See "Net Foreign Exchange Gain (Loss)").

     The  marketplace  for the  Company's  products  dictates  that  many of the
Company's  products be shipped  very quickly  after an order is  received.  As a
result, the Company is required to maintain significant inventories.  Therefore,
inventory  obsolescence  is a risk for the Company  due to frequent  engineering
changes,  shifting customer demand,  the emergence of new industry standards and
rapid  technological  advances  including the introduction by the Company or its
competitors of products  embodying new technology.  While the Company  maintains
valuation   allowances  for  excess  and  obsolete  inventories  and  management
continues to monitor the adequacy of such valuation allowances,  there can be no
assurance that such valuation allowances will be sufficient.

     The Company has no debt or  off-balance  sheet debt.  As of  September  30,
2004,  the  Company  did not have  any  relationships  with  any  unconsolidated
entities  or  financial  partnerships,  such as  entities  often  referred to as
structured  finance entities,  which would have been established for the purpose
of  facilitating  off-balance  sheet  arrangements.  As such, the Company is not
exposed to any financing,  liquidity,  market or credit risk that could arise if
the Company were engaged in such relationships.

Market Risk

     The Company is exposed to a variety of risks,  including  foreign  currency
fluctuations and changes in the market value of its  investments.  In the normal
course of business,  the Company employs established  policies and procedures to
manage its exposure to  fluctuations  in foreign  currency values and changes in
the market value of its investments.

     Foreign Currency Hedging  Activities.  The Company's  objective in managing
its exposure to foreign  currency  exchange rate  fluctuations  is to reduce the
impact of adverse  fluctuations in such exchange rates on the Company's earnings
and cash flow.  Accordingly,  the Company  utilizes  purchased  foreign currency
option  contracts  and forward  contracts to hedge its  exposure on  anticipated
transactions and firm commitments. The principal currencies hedged are the euro,
British  pound and  Japanese  yen.  The Company  monitors  its foreign  exchange
exposures regularly to ensure the overall  effectiveness of its foreign currency
hedge  positions.  However,  there can be no  assurance  the  Company's  foreign
currency hedging activities will substantially offset the impact of fluctuations
in currency exchange rates on its results of operations and financial  position.
Based on the foreign exchange instruments  outstanding at September 30, 2004, an
adverse  change  (defined  as 20% in the Asian  currencies  and 10% in all other
currencies)  in exchange  rates would result in a decline in the aggregate  fair
market value of all  instruments  outstanding  of  approximately  $6.6  million.
However,  as the  Company  utilizes  foreign  currency  instruments  for hedging
anticipated and firmly committed  transactions,  management believes that a loss
in fair value for those instruments will be substantially offset by increases in
the value of the underlying exposure.


     Short-term  Investments.  The fair value of the  Company's  investments  in
marketable securities at September 30, 2004 was $147.2 million. Investments with
maturities  beyond one year are  classified as short-term  based on their highly
liquid nature and because such marketable securities represent the investment of
cash that is available for current operations.  The Company's  investment policy
is to manage its investment  portfolio to preserve principal and liquidity while
maximizing the return on the investment portfolio through the full investment of
available funds. The Company diversifies its marketable  securities portfolio by
investing  in  multiple  types of  investment-grade  securities.  The  Company's
investment  portfolio  is  primarily  invested  in  securities  with at least an
investment grade rating to minimize  interest rate and credit risk as well as to
provide for an  immediate  source of funds.  Based on the  Company's  investment
portfolio and interest  rates at September 30, 2004, a 100 basis point  increase
or  decrease  in  interest  rates  would  result in a decrease  or  increase  of
approximately  $736,000,  respectively,  in the  fair  value  of the  investment
portfolio.  Although  changes in interest rates may affect the fair value of the
investment  portfolio and cause unrealized gains or losses, such gains or losses
would not be realized unless the investments are sold.

Factors Affecting the Company's Business and Prospects

     U.S./Global  Economic Changes.  As occurred in recent years, the markets in
which the Company does business could again experience the negative effects of a
slowdown in the U.S., and/or global economies.  Additionally,  the Company could
be impacted by the effects of any  recurrence of the SARS virus or the occurence
of any similar virus, either through increased difficulty or costs of the export
of  products  into  affected  regions,  the  import  of  components  used in the
Company's products from affected regions,  and/or the effects the virus or costs
to contain the virus have on the  economy in regions in which the  Company  does
business,  particularly  Asia,  which has been the highest  growth region of the
Company  over the past  three  years.  The  Company  could also be subject to or
impacted by acts of  terrorism  and/or the effects  that war or  continued  U.S.
military action would have on the U.S. and/or global economies. The worsening of
the U.S. or global  economies  could  result in reduced  purchasing  and capital
spending in any of the markets served by the Company which could have a material
adverse effect on the Company's operating results.

     Budgets.  The Company has  established  an operating  budget for 2004.  The
Company's spending for the remainder of the year could exceed this budget due to
a number of factors,  including:  additional marketing costs for conferences and
tradeshows;   increased  costs  from  the  over-hiring  of  product  development
engineers or other  personnel;  increased  manufacturing  costs  resulting  from
component supply shortages and/or component price fluctuations and/or additional
expenses  related to  intellectual  property  litigation.  Any future  decreased
demand for the Company's  products  could result in decreased  revenue and could
require the Company to revise its budget and reduce expenditures.  Exceeding the
established  operating  budget or failing to reduce  expenditures in response to
any decrease in revenue  could have a material  adverse  effect on the Company's
operating results.

     Risk of  Component  Shortages.  As has  occurred  in the past and as may be
expected to occur in the future,  supply  shortages  of  components  used in our
products, including sole source components, can result in significant additional
costs and  inefficiencies  in  manufacturing.  If the Company is unsuccessful in
resolving any such component shortages,  it will experience a significant impact
on the timing of revenue and/or an increase in  manufacturing  costs,  either of
which would have a material adverse impact on the Company's operating results.

     Fluctuations  in  Quarterly  Results.  The  Company's  quarterly  operating
results  have  fluctuated  in the past and may  fluctuate  significantly  in the
future due to a number of  factors,  including:  changes in the mix of  products
sold; the availability and pricing of components from third parties  (especially
sole sources);  the timing of orders;  level of pricing of international  sales;
fluctuations in foreign  currency  exchange rates; the difficulty in maintaining
margins,  including the higher margins  traditionally  achieved in international
sales;  and  changes in pricing  policies by the  Company,  its  competitors  or
suppliers.  Specifically,  if the local  currencies  in which the Company  sells
weaken against the U.S. dollar,  and if the local sales prices cannot be raised,
the Company will experience a deterioration of its gross and net profit margins.
If the U.S. dollar  strengthens in the future,  it could have a material adverse
effect on gross and net profit margins.

     As has  occurred in the past and as may be expected to occur in the future,
new software  products of the Company or new operating  systems of third parties
on which the Company's products are based, often contain bugs or errors that can
result in reduced  sales and/or cause the  Company's  support costs to increase,
either of which could have a material adverse impact on the Company's  operating
results.  Furthermore,  the Company has  significant  revenues from customers in
industries such as semiconductors, automated test equipment, telecommunications,
aerospace,  defense and  automotive  which are cyclical in nature.  Downturns in
these industries could have a material adverse effect on the Company's operating
results.


     In  recent  years,  the  Company's  revenues  have  been  characterized  by
seasonality,  with revenues  typically being  relatively  constant in the first,
second and third  quarters,  growing in the fourth quarter and being  relatively
flat or declining  from the fourth  quarter of the year to the first  quarter of
the following year. The Company  believes the seasonality of its revenue results
from the  international  mix of its revenue and the variability of the budgeting
and purchasing cycles of its customers throughout each international  region. In
addition,  total operating  expenses have in the past tended to be higher in the
second and third quarters of each year,  due to recruiting and increased  intern
personnel expenses.

     New  Product  Introductions  and  Market  Acceptance.  The  market  for the
Company's  products is characterized  by rapid  technological  change,  evolving
industry  standards,   changes  in  customer  needs  and  frequent  new  product
introductions, and is therefore highly dependent upon timely product innovation.
The Company's  success is dependent on its ability to  successfully  develop and
introduce  new and  enhanced  products  on a timely  basis to replace  declining
revenues  from older  products,  and on increasing  penetration  in domestic and
international  markets.  In the past,  the Company has  experienced  significant
delays between the announcement and the commercial availability of new products.
Any  significant  delay in releasing new products could have a material  adverse
effect on the ultimate success of a product and other related products and could
impede  continued  sales of  predecessor  products,  any of which  could  have a
material  adverse  effect on the Company's  operating  results.  There can be no
assurance  that the Company will be able to introduce new products in accordance
with announced  release dates,  that new products will achieve market acceptance
or that  any such  acceptance  will be  sustained  for any  significant  period.
Failure of new  products to achieve or sustain  market  acceptance  could have a
material adverse effect on the Company's operating results.  Moreover, there can
be no assurance that the Company's international sales will continue at existing
levels or grow in  accordance  with the  Company's  efforts to increase  foreign
market penetration.

     Risks Associated with the Company's Web Site. The Company devotes resources
to  maintain  its Web site as a key  marketing  and sales  tool and  expects  to
continue to do so in the future. There can be no assurance that the Company will
be successful in its attempt to leverage the Web to increase sales.  The Company
hosts its Web site internally. Any failure to successfully maintain the Web site
could have a significant adverse impact on the Company's operating results.

     Operation  in  Intensely  Competitive  Markets.  The  markets  in which the
Company  operates  are  characterized  by  intense   competition  from  numerous
competitors,  some of which  are  divisions  of large  corporations  having  far
greater  resources  than the  Company,  and the Company  expects to face further
competition  from new market entrants in the future. A key competitor is Agilent
Technologies  Inc.  ("Agilent").  Agilent  offers  its own  line  of  instrument
controllers   and  also  offers   hardware  and  software  add-on  products  for
third-party  desktop  computers and  workstations  that provide  solutions  that
directly compete with the Company's virtual instrumentation products. Agilent is
aggressively  advertising and marketing  products that are competitive  with the
Company's products.  Because of Agilent's strong position in the instrumentation
business,  changes in its marketing  strategy or product  offerings could have a
material adverse effect on the Company's operating results.

     The  Company  believes  its  ability to compete  successfully  depends on a
number of factors  both within and outside its control,  including:  new product
introductions by competitors;  product pricing; quality and performance; success
in  developing  new  products;  adequate  manufacturing  capacity  and supply of
components and materials; efficiency of manufacturing operations;  effectiveness
of sales and marketing  resources and strategies;  strategic  relationships with
other suppliers;  timing of new product introductions by the Company; protection
of the  Company's  products by  effective  use of  intellectual  property  laws;
general market and economic  conditions;  and government  actions throughout the
world.  There  can be no  assurance  that the  Company  will be able to  compete
successfully in the future.

     Management  Information  Systems.  The  Company  relies  on  three  primary
regional centers for its management information systems. As with any information
system,  unforeseen issues may arise that could affect  management's  ability to
receive adequate, accurate and timely financial information, which in turn could
inhibit effective and timely decisions.  Furthermore, it is possible that one or
more of the Company's  three  regional  information  systems could  experience a
complete  or partial  shutdown.  If such a shutdown  occurred  near the end of a
quarter it could impact the Company's product shipments and revenues, as product
distribution  is heavily  dependent  on the  integrated  management  information
systems in each region. Accordingly,  operating results in that quarter would be
adversely  impacted.  The  Company  is  working to  maintain  reliable  regional
management  information  systems to control  costs and  improve  its  ability to
deliver its products in its markets  worldwide.  No assurances can be given that
the  Company's  efforts  will be  successful.  The failure to receive  adequate,
accurate and timely financial  information could inhibit management's ability to
make effective and timely decisions.


     During the quarter ending March 31, 2005, the Company will be upgrading its
European business  applications suite to Oracle's latest web-based release, 11i.
There can be no  assurance  that the Company  will not  experience  difficulties
implementing the new system.  Difficulties or delays in the  implementation  may
interrupt  normal Company  operations,  including the ability to provide quotes,
process orders,  ship products,  provide  services and support to its customers,
bill and track its customers,  fulfill contractual obligations and otherwise run
its business.  Any disruptions occurring in the implementation of the system may
have a material adverse effect on the Company's operating results.

     Risks  Associated  with  International  Operations  and Foreign  Economies.
International  sales are subject to inherent  risks,  including  fluctuations in
local  economies,  difficulties  in staffing  and managing  foreign  operations,
greater  difficulty  in  accounts  receivable  collection,  costs  and  risks of
localizing  products for foreign  countries,  unexpected  changes in  regulatory
requirements, tariffs and other trade barriers, difficulties in the repatriation
of earnings  and the burdens of complying  with a wide variety of foreign  laws.
The Company must also comply with various import and export regulations. Failure
to comply with these  regulations  could result in fines and/or  termination  of
import and export privileges,  which could have a material adverse effect on the
Company's operating results.  Additionally,  the regulatory  environment in some
countries is very  restrictive as their  governments  try to protect their local
economy and value of their local currency against the U.S. dollar. Sales made by
the  Company's  international  direct  sales  offices are  denominated  in local
currencies,  and  accordingly,  the U.S.  dollar  equivalent  of these  sales is
affected by changes in the foreign  currency  exchange rates.  Between the third
quarter of 2003 and the third  quarter  of 2004,  net of  hedging  results,  the
change in exchange rates had the effect of increasing the Company's consolidated
sales in the third quarter of 2004 by $2.2 million,  or 4% compared to the third
quarter of 2003. Since most of the Company's  international  operating  expenses
are also  incurred in local  currencies,  the change in  exchange  rates had the
effect of  increasing  operating  expenses  by $800,000  for the  quarter  ended
September 30, 2004  compared to the  comparable  prior year period.  If the U.S.
dollar weakens in the future,  it could result in the Company's having to reduce
prices  locally in order for its  products  to remain  competitive  in the local
marketplace.  If the U.S. dollar  strengthens in the future,  and the Company is
unable to successfully  raise its  international  selling prices it could have a
materially adverse effect on the Company's operating results.

     Expansion of  Manufacturing  Capacity.  During 2001, the Company  completed
construction  of a second  manufacturing  facility.  This facility is located in
Hungary and became  operational  in the fourth  quarter of 2001.  This  facility
sources a significant  portion of the Company's sales.  Currently the Company is
continuing to develop and implement information systems to support the operation
of this  facility.  This  facility and its  operation  are also subject to risks
associated with a relatively new manufacturing  facility and with doing business
internationally,  including difficulty in managing manufacturing operations in a
foreign  country,  difficulty  in  achieving  or  maintaining  product  quality,
interruption  to  transportation  flows for  delivery  of  components  to us and
finished  goods to our  customers,  and changes in the  country's  political  or
economic  conditions.  No assurance can be given that the Company's efforts will
be successful. Accordingly, a failure to deal with these factors could result in
interruption  in the  facility's  operation or delays in expanding its capacity,
either of which could have a material adverse effect on the Company's  operating
results.

     Income Tax Rate.  The  Company  established  a  manufacturing  facility  in
Hungary in 2001. As a result of certain foreign investment  incentives available
under  Hungarian  law,  the profit from the  Company's  Hungarian  operation  is
currently  exempt from income tax.  These  benefits  may not be available in the
future due to changes in  Hungary's  political  condition  and/or tax laws.  The
reduction or elimination of these foreign investment  incentives would result in
the reduction or  elimination  of certain tax benefits  thereby  increasing  the
Company's  future effective income tax rate, which could have a material adverse
effect on the Company's operating results.

     The  Company   receives  a   substantial   income  tax  benefit   from  the
extraterritorial  income exemption ("ETI") under U.S. law. The ETI rules provide
that a percentage of the profits from products and intangibles exported from the
U.S. are exempt from U.S.  tax. This benefit will not be available in the future
as ETI has been  repealed by the  American  Jobs  Creation  Act of 2004 which is
expected to be signed into law by the President of the United  States.  ETI will
be  phased  out over the next two  years and will  cease to be  available  as of
December 31, 2006.  The repeal of the ETI will  increase  the  Company's  future
effective  income tax rate,  which could have a material  adverse  effect on the
Company's operating results.

     Products Dependent on Certain  Industries.  Sales of the Company's products
are   dependent   on   customers  in  certain   industries,   particularly   the
telecommunications, semiconductor, automotive, automated test equipment, defense
and aerospace industries.  As experienced in the past, and as may be expected to
occur in the future, downturns characterized by diminished product demand in any
one or more of these  industries  could result in decreased  sales,  which could
have a material adverse effect on the Company's operating results.


     Dependence  on Key  Suppliers.  The Company's  manufacturing  processes use
large volumes of high-quality  components and subassemblies  supplied by outside
sources.  Several of these  components  are  available  through  sole or limited
sources.   Sole-source  components  purchased  by  the  Company  include  custom
application-specific  integrated  circuits  ("ASICs") and other components.  The
Company has in the past  experienced  delays and quality  problems in connection
with sole-source  components,  and there can be no assurance that these problems
will not recur in the future.  Accordingly,  the failure to receive  sole-source
components  from  suppliers  could  result in a material  adverse  effect on the
Company's revenues and operating results.

     Stock-based  Compensation  Plans.  The Company  has two active  stock-based
compensation   plans  and  one  inactive  plan.   The  two  active   stock-based
compensation  plans are the 1994  Incentive Plan and the Employee Stock Purchase
Plan. The Company  currently  adheres to the disclosure  only provisions of SFAS
No. 123, as amended by SFAS No. 148,  Accounting for Stock-Based  Compensation -
Transition and Disclosure, and as such, no compensation cost has been recognized
in the Company's  financial  statements  for the stock option plan and the stock
purchase plan. The Company is currently monitoring the recent proposal requiring
changes in the accounting  treatment for stock options.  The Company will comply
with any changes in the accounting of stock options required by the FASB and the
Securities and Exchange Commission.

     Provisions in Our Charter  Documents  and Delaware Law and Our  Stockholder
Rights  Plan May Delay or  Prevent an  Acquisition  of Us.  Our  certificate  of
incorporation and bylaws and Delaware law contain  provisions that could make it
more  difficult for a third party to acquire us without the consent of our Board
of  Directors.  These  provisions  include  a  classified  Board  of  Directors,
prohibition  of   stockholder   action  by  written   consent,   prohibition  of
stockholders to call special meetings and the requirement that the holders of at
least 80% of our shares approve any business  combination not otherwise approved
by  two-thirds  of the  Board  of  Directors.  Delaware  law also  imposes  some
restrictions  on  mergers  and other  business  combinations  between us and any
holder of 15% or more of our outstanding common stock. In addition, our Board of
Directors has the right to issue preferred stock without  stockholder  approval,
which  could be used to  dilute  the  stock  ownership  of a  potential  hostile
acquirer.  Our Board of  Directors  adopted a new  stockholders  rights  plan on
January 21, 2004, pursuant to which we declared a dividend of one right for each
share of our common  stock  outstanding  as of May 10,  2004.  This  rights plan
replaced a similar  rights plan that had been in effect since our initial public
offering  in 1995.  Unless  redeemed  by us prior  to the  time the  rights  are
exercised,  upon the occurrence of certain  events,  the rights will entitle the
holders to receive upon  exercise  thereof  shares of our  preferred  stock,  or
shares of an acquiring  entity,  having a value equal to twice the  then-current
exercise price of the right. The issuance of the rights could have the effect of
delaying or preventing a change of control of us.

     Proprietary  Rights and  Intellectual  Property  Litigation.  The Company's
success  depends  on its  ability  to  obtain  and  maintain  patents  and other
proprietary rights relative to the technologies used in its principal  products.
Despite the Company's  efforts to protect its proprietary  rights,  unauthorized
parties  may have in the past  infringed  or violated  certain of the  Company's
intellectual  property  rights.  The  Company  from  time  to  time  engages  in
litigation  to protect its  intellectual  property  rights.  In  monitoring  and
policing  its  intellectual  property  rights,  the  Company has been and may be
required to spend  significant  resources.  The Company from time to time may be
notified that it is infringing certain patent or intellectual property rights of
others.  There can be no assurance  that the SoftWIRE case and/or other existing
litigation,  or any other  intellectual  property  litigation  initiated  in the
future,  will not cause significant  litigation expense,  liability,  injunction
against  some  of  the  Company's  products,  and a  diversion  of  management's
attention,  any of which may have a  material  adverse  effect on the  Company's
operating results.

     Section  404 of the  Sarbanes-Oxley  Act  of  2002.  While  we  believe  we
currently  have  adequate  internal  control over  financial  reporting,  we are
required  to  evaluate  our   internal   control   under   Section  404  of  the
Sarbanes-Oxley  Act of 2002 and any adverse results from such  evaluation  could
result in a loss of investor  confidence  in our  financial  reports and have an
adverse effect on our stock price.

     Pursuant to Section 404 of the Sarbanes-Oxley  Act of 2002,  beginning with
the Company's Annual Report on Form 10-K for the fiscal year ending December 31,
2004, we will be required to furnish a report by our management on the Company's
internal control over financial reporting. Such report will contain, among other
matters,  an  assessment  of the  effectiveness  of our  internal  control  over
financial  reporting as of the end of the  Company's  fiscal  year,  including a
statement as to whether or not the  Company's  internal  control over  financial
reporting is effective.  This assessment must include disclosure of any material
weaknesses in the Company's internal control over financial reporting identified
by  management.  Such report must also  contain a statement  that the  Company's
auditors have issued an attestation  report on  management's  assessment of such
internal controls.  Auditing Standard No. 2 provides the professional  standards
and  related  performance  guidance  for  auditors  to attest to, and report on,
management's  assessment of the effectiveness of internal control over financial
reporting under Section 404.


     While we currently believe our internal control over financial reporting is
effective,  we are still  performing  the system and process  documentation  and
evaluation needed to comply with Section 404, which is both very costly and very
challenging.  During this  process,  if our  management  identifies  one or more
material  weaknesses  in our  internal  control  over  financial  reporting,  as
prescribed by Section 404, we will be unable to assert such internal  control is
effective.  If we are unable to assert that our internal  control over financial
reporting is effective as of December 31, 2004 (or if our auditors are unable to
attest  that our  management's  report  is fairly  stated or they are  unable to
express an opinion on the effectiveness of our internal controls), we could lose
investor  confidence in the accuracy and completeness of our financial  reports,
which would have an adverse effect on our stock price.

     While we currently are on schedule for completion of and  anticipate  being
able to satisfy the  requirements of Section 404 in a timely fashion,  we cannot
be certain as to the timing of  completion  of our  evaluation,  testing and any
required  remediation  due in large part to the fact that there is no  precedent
available by which to measure  compliance with the new Auditing  Standard No. 2.
In this regard,  we recently  received a letter from our  auditors  informing us
that it is of critical  importance  that we continue  diligently to complete our
Section 404 work and to provide our results and assessments to our auditors on a
timely  basis so that our  auditors can have  available  the staff  necessary to
complete their work and issue their attestation  report by the required date. If
we are not able to  comply  with the  requirements  of  Section  404 in a timely
manner or if our auditors are not able to complete  the  procedures  required by
Audit Standard No. 2 to support their  attestation  report, we would likely lose
investor  confidence in the accuracy and completeness of our financial  reports,
which would have an adverse effect on our stock price.

     Dependence on Key Management and Technical Personnel. The Company's success
depends to a  significant  degree upon the  continued  contributions  of its key
management,   sales,   marketing,   research  and  development  and  operational
personnel,  including Dr. Truchard,  the Company's  Chairman and Chief Executive
Officer, and other members of senior management and key technical personnel. The
Company  has no  agreements  providing  for  the  employment  of any of its  key
employees for any fixed term and the  Company's  key  employees may  voluntarily
terminate  their  employment  with  the  Company  at any  time.  The loss of the
services of one or more of the  Company's key employees in the future could have
a material adverse affect on the Company's  operating results.  The Company also
believes  its future  success will depend upon its ability to attract and retain
additional  highly  skilled  management,   technical,  marketing,  research  and
development,  and  operational  personnel with  experience in managing large and
rapidly  changing  companies,  as well as training,  motivating and  supervising
employees.  In addition,  the recruiting  environment for software  engineering,
sales and other technical  professionals  is very  competitive.  Competition for
qualified software engineers is particularly  intense and is likely to result in
increased  personnel  costs.  Failure to attract  or retain  qualified  software
engineers could have an adverse effect on the Company's  operating results.  The
Company also recruits and employs foreign  nationals to achieve its hiring goals
primarily for engineering and software positions. There can be no guarantee that
the Company will continue to be able to recruit foreign nationals at the current
rate. These factors further intensify  competition for key personnel,  and there
can be no  assurance  that the  Company  will be  successful  in  retaining  its
existing key personnel or attracting  and retaining  additional  key  personnel.
Failure to attract and retain a sufficient number of the Company's key personnel
could have a material adverse effect on the Company's operating results.

     Risk of Product  Liability Claims.  The Company's  products are designed to
provide  information  upon which the users may rely.  The  Company  attempts  to
assure the quality and accuracy of the processes contained in its products,  and
to limit its product  liability  exposure  through  contractual  limitations  on
liability,  including  disclaimers in its "shrink wrap" license  agreements with
end-users.  If future products contain errors that produce  incorrect results on
which  users  rely,  customer  acceptance  of the  Company's  products  could be
adversely  affected.  Further,  the Company could be subject to liability claims
that could have a material adverse effect on the Company's  operating results or
financial position.  Although the Company maintains liability  insurance,  there
can be no assurance that such insurance or the  contractual  provisions  used by
the Company to limit its liability will be sufficient.

Item 3. Quantitative and Qualitative Disclosures About Market Risk

     Response to this item is included in "Item 2 - Management's  Discussion and
Analysis of Financial Conditions and Results of Operations - Market Risk" above.

Item 4. Controls and Procedures

     The Company's Chief Executive Officer and Chief Financial Officer, based on
the evaluation of the Company's  disclosure  controls and procedures (as defined
in Rules  13a-15(e)  and  15d-15(e) of the  Securities  Exchange Act of 1934, as
amended)  required  by  paragraph  (b) of  Rule  13a-15  or Rule  15d-15,  as of
September 30, 2004,  have concluded that the Company's  disclosure  controls and
procedures  were  effective  to ensure the  timely  collection,  evaluation  and
disclosure  of  information  relating to the Company that would  potentially  be
subject to disclosure under the Securities Exchange Act of 1934, as amended, and
the rules and  regulations  promulgated  thereunder.  We continue to enhance our
internal control over financial  reporting by adding resources in key functional
areas with the goal of bringing our operations up to the level of documentation,
segregation of duties, and systems security necessary,  as well as transactional
control procedures  required under the new Auditing Standard No. 2 issued by the
Public Company Accounting Oversight Board. We discuss and disclose these matters
to the audit committee of our board of directors and to our auditors. During the
quarter  ended  September  30, 2004,  there were no  significant  changes in the
Company's  internal  control over financial  reporting  identified in connection
with the evaluation  required by paragraph (d) of the Rule 13a-15 or Rule 15d-15
that has materially affected,  or is reasonably likely to materially affect, the
internal controls over financial reporting.





PART II - OTHER INFORMATION


ITEM 1. LEGAL PROCEEDINGS

The Company has filed two complaints against The MathWorks,  Inc.  ("MathWorks")
for patent infringement.  In both complaints,  the Company claimed the MathWorks
infringes certain of its U.S. patents and the MathWorks  challenged the validity
and  enforceability  of those  patents and asserts that it does not infringe the
claims of those patents.

The first  complaint was filed on January 25, 2001 in the U.S.  District  Court,
Eastern  District of Texas  (Marshall  Division).  On January 30, 2003, the jury
found infringement by the MathWorks of three of the patents involved and awarded
the Company  specified  damages.  On June 23, 2003,  the District  Court entered
final judgment in favor of the Company in an amount of  approximately $4 million
and entered an injunction  against  MathWorks'  sale of its Simulink and related
products.  The District Court stayed the  injunction  pending appeal of the case
and required the MathWorks to pay a specified  royalty on its U.S.  sales of the
same  products  during the  pendency  of appeal.  The initial  judgment  and the
royalties on the sales of infringing  products  through June 30, 2004 total $6.9
million  and are  escrowed.  On July 22,  2003,  MathWorks  filed its  Notice of
Appeal.  On September 3, 2004, the U.S. Court of Appeal for the Federal  Circuit
affirmed the District  Court's  final  judgment and  injunction in all respects.
Subsequently  on October 14,  2004,  the  District  Court lifted its stay of the
injunction so as to place into effect the  injunction  against  MathWorks'  U.S.
sales of its  Simulink  and related  products.  The final  judgment has not been
recorded in the financial statements of the Company pending release of the funds
from escrow.

On September 22, 2004,  MathWorks  filed a complaint  against the Company in the
U.S.  District Court,  Eastern District of Texas (Marshall  Division),  claiming
that on that day it had released  modified  versions of its Simulink and related
product and seeking a  declaratory  judgment  that the modified  products do not
infringe the three patents  adjudged  infringed in the District Court's decision
on June 23,  2003,  and  affirmed by the Court of Appeals on  September 3, 2004.
MathWorks  has not  served  the  complaint,  nor has the  Company  answered  the
complaint. The Company has publicly stated its position that MathWorks' modified
products do not avoid the  injunction.  The Company has also publicly  announced
its  intent to file a motion  asking the  District  Court to hold  MathWorks  in
contempt for violating the  injunction.  It is also the Company's  position that
this dispute over MathWorks' modified products should be resolved in the context
of the Company's  planned  motion for contempt,  rather than in a new lawsuit as
sought by MathWorks by way of its complaint filed on September 22, 2004.

The second  complaint  was filed  October 21,  2002,  also in the U.S.  District
Court, Eastern District of Texas (Marshall Division) and on August 27, 2003, the
complaint was dismissed by agreement of the parties.

On January 15, 2003,  SoftWIRE  Technology,  LLC  ("SoftWIRE")  and  Measurement
Computing  Corporation ("MCC") filed a complaint against the Company in the U.S.
District  Court for the  District of  Massachusetts  asking the court to declare
that SoftWIRE does not infringe  certain of the Company's U.S.  patents and that
such patents are invalid and  unenforceable.  On February 21, 2003,  the Company
filed a complaint against SoftWIRE and MCC in the U.S.  District Court,  Eastern
District  of Texas  (Marshall  Division)  claiming  that both  SoftWIRE  and MCC
infringe the same and certain other of the Company's U.S. patents.  SoftWIRE and
MCC challenge the validity and  enforceability  of these patents and assert that
they do not infringe any of these patents.  In the Eastern District action,  the
Company seeks monetary damages and injunction of the sale of certain products of
SoftWIRE and MCC as well as  attorney's  fees and costs.  By order of the Court,
the Eastern  District action was transferred to the U.S.  District Court for the
District of  Massachusetts  on May 9, 2003, and has been  consolidated  with the
previously-filed  SoftWIRE  action,  which also  includes  counterclaims  by the
Company that are the same in substance  as the  Company's  claims in the Eastern
District  action.  On June 12,  2003,  SoftWIRE  moved  for  leave to amend  its
complaint in order to allege that the Company  infringes  two U.S.  patents that
SoftWIRE  acquired by purchase on May 23, 2003.  On November 5, 2003,  the Court
granted SoftWIRE's motion to amend, thereby adding SoftWIRE's two patents to the
litigation.  With respect to those two SoftWIRE patents, SoftWIRE seeks monetary
damages and injunction of the sale of the Company's  LabVIEW software  products,
as well as  attorney's  fees and costs.  The Company  challenges  the  validity,
enforceability  and  alleged  infringement  of  those  patents  and  intends  to
vigorously defend against SoftWIRE's claims. Discovery in the litigation remains
underway and is expected to continue  through  2005. No trial date has been set.
During the fourth quarter of 2003, the Company  accrued $3.8 million  related to
its probable loss from this  contingency,  which consists  solely of anticipated
patent defense costs that are probable of being incurred. On October 6, 2004 the
court  extended  the  discovery  period  through  2005.  Because of the extended
discovery  period,  the Company  estimates that  additional  legal costs will be
incurred.  Accordingly,  during the third quarter of 2004 the Company  increased
its accrual for these additional patent defense costs that are probable of being
incurred by $2.5 million.  However,  the outcome of any litigation is inherently
uncertain  and there can be no  assurance  as to the  ultimate  outcome  of this
matter or any other litigation.  The Company charged  approximately $1.1 million
against this accrual during the third quarter of 2004. The Company has charged a
total of $2.4 million against this accrual through September 30, 2004.


ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

                                                                 Maximum number
                                             Total number of     of shares that
                                            shares purchased      may yet be
                      Total      Average      as part of a      purchased under
                    number of   price paid  publicly announced    the plan or
      Period          shares    per share    plan or program        program
- ------------------  ----------  ----------  ------------------  ----------------
July 1, 2004 to
  July 31, 2004....     --         --               --             2,765,750
August 1, 2004 to
  August 31, 2004     251,000    $26.85          251,000           2,514,750
September 1, 2004..
  to September 30,
  2004.............     --         --               --             2,514,750
                    ---------               -----------------
Total..............   251,000    $26.85          251,000
                    =========               =================

The Company's share repurchase plan was announced on October 17, 2002. Under the
plan,  the Company has  authorization  to repurchase  up to 3,000,000  shares of
National Instruments stock. The plan has no expiration date.

ITEM 5. OTHER INFORMATION

From time to time the Company's directors, executive officers and other insiders
may adopt stock  trading plans  pursuant to Rule  10b5-1(c)  promulgated  by the
Securities and Exchange Commission under the Securities Exchange Act of 1934, as
amended.  Jeffrey L. Kodosky and James J. Truchard  have made periodic  sales of
the Company's stock pursuant to such plans.





ITEM 6. EXHIBITS

(a) Exhibits.

     3.1(2) Certificate of Incorporation, as amended, of the Company.

     3.2(2) Amended and Restated Bylaws of the Company.

     3.3(4) Certificate of Designation of Rights, Preferences and Privileges of
            Series A Participating Preferred Stock of the Company.

     4.1(1) Specimen of Common Stock certificate of the Company.

     4.2(3) Rights  Agreement dated as of January 21, 2004, between the Company
            and EquiServe Trust Company, N.A.

     10.1(1) Form of Indemnification Agreement.

     10.2(5) 1994 Incentive Plan, as amended.*

     10.3(1) 1994 Employee Stock Purchase Plan.*

     31.1    Certification of Chief Executive Officer Pursuant to 18 U.S.C.
             Section 1350, as Adopted Pursuant to Section 302 of the
             Sarbanes-Oxley Act of 2002.

     31.2    Certification of Chief Financial Officer Pursuant to 18 U.S.C.
             Section 1350, as Adopted Pursuant to Section 302 of the
             Sarbanes-Oxley Act of 2002.

     32.1    Certification of Chief Executive Officer and Chief Financial
             Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to
             Section 906 of the Sarbanes-Oxley Act of 2002.

     (1)     Incorporated by reference to the Company's  Registration  Statement
             on Form S-1 (Reg. No. 33-88386) declared effective March 13, 1995.

     (2)     Incorporated by reference to the same-numbered  exhibit filed with
             the Company's  Annual  Report  on Form  10-K  for the  fiscal  year
             ended December 31, 2003.

     (3)     Incorporated  by  reference  to exhibit  4.1 filed with the
             Company's Current Report on Form 8-K filed on January 28, 2004.

     (4)     Incorporated by reference to the same-numbered  exhibit filed with
             the Company's Form 8-A on April 27, 2004.

     (5)     Incorporated by reference to the same-numbered  exhibit filed with
             the Company's Form 10-Q on August 5, 2004.

      *      Management Contract or Compensatory Plan or Arrangement.

(b) Reports on Form 8-K.

     In  connection  with the  Company's  earning  press release for the quarter
     ended June 30, 2004, the Company  furnished a Current Report on Form 8-K on
     July 27, 2004.







                                    SIGNATURE


     Pursuant to the  requirements  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 INSTRUMENTS CORPORATION
                                    Registrant




                                BY: /s/ Alex Davern
                                    Alex Davern
                                    Chief Financial Officer and Treasurer
                                    (principal financial and accounting officer)



Dated:  October 29, 2004