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 fiscal quarter ended:  March 31, 2003 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 offices)                  (zip code)

       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 by Rule 126-2 of the 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 May 9, 2003
     Common Stock - $0.01 par value                     51,482,713



                         NATIONAL INSTRUMENTS CORPORATION


         INDEX

                                                                        Page No.

         PART I.  FINANCIAL INFORMATION

Item 1   Financial Statements:

            Consolidated Balance Sheets
            March 31, 2003 (unaudited) and December 31, 2002................3

            Consolidated Statements of Income (unaudited)
            three months ended March 31, 2003 and 2002......................4

            Consolidated Statements of Cash Flows (unaudited)
            three months ended March 31, 2003 and 2002......................5

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

Item 2   Management's Discussion and Analysis of Financial
         Condition and Results of Operations...............................10

Item 3   Quantitative and Qualitative Disclosures about Market Risk........18

Item 4   Controls and Procedures...........................................18

         PART II.  OTHER INFORMATION

Item 1   Legal Proceedings.................................................19

Item 5   Other Information.................................................19

Item 6   Exhibits and Reports on Form 8-K..................................19

         Signatures and Certifications.....................................20



                         PART I - FINANCIAL INFORMATION

ITEM 1.  Financial Statements

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

                                                      March 31,     December 31,
                                                        2003            2002
                                                    ------------    ------------
Assets                                               (unaudited)
Current assets:
   Cash and cash equivalents.....................    $   36,854      $   40,240
   Short-term investments........................       121,035         113,638
   Accounts receivable, net......................        62,229          62,981
   Inventories, net..............................        37,570          39,247
   Prepaid expenses and other current assets.....        11,088          13,756
   Deferred income tax, net......................         7,734           8,104
                                                    ------------    ------------
     Total current assets........................       276,510         277,966
Property and equipment, net......................       150,711         152,133
Intangibles and other assets.....................        35,344          28,615
                                                    ------------    ------------
     Total assets................................    $  462,565      $  458,714
                                                    ============    ============
Liabilities and Stockholders' Equity
Current liabilities:
   Accounts payable..............................    $   27,728      $   25,578
   Accrued compensation..........................        12,419           9,555
   Accrued expenses and other liabilities........        14,715          13,507
   Income taxes payable..........................         1,174           6,153
   Other taxes payable...........................         6,160          11,720
                                                    ------------    ------------
     Total current liabilities...................        62,196          66,513
Deferred income taxes, net.......................         5,538           5,738
                                                    ------------    ------------
     Total liabilities...........................        67,734          72,251
                                                    ------------    ------------
Commitments and contingencies....................            --              --
Stockholders' equity:
   Common stock:  par value $.01; 180,000,000
   shares authorized; 51,222,640 and 51,074,607
   shares issued and outstanding, respectively...           512             511
   Additional paid-in capital....................        73,806          72,063
   Retained earnings.............................       328,576         321,813
   Accumulated other comprehensive loss..........        (8,063)         (7,924)
                                                    ------------    ------------
     Total stockholders' equity..................       394,831         386,463
                                                    ------------    ------------
     Total liabilities and stockholders' equity..    $  462,565      $  458,714
                                                    ============    ============

   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
                                                                 March 31,
                                                          ----------------------
                                                             2003        2002
                                                          ----------  ----------
Net sales............................................     $  99,173   $  94,739
Cost of sales........................................        26,013      25,358
                                                          ----------  ----------
   Gross profit......................................        73,160      69,381
                                                          ----------  ----------
Operating expenses:
   Sales and marketing...............................        38,545      35,407
   Research and development..........................        15,251      15,933
   General and administrative........................        11,040       7,786
                                                          ----------  ----------
      Total operating expenses.......................        64,836      59,126
                                                          ----------  ----------
      Operating income...............................         8,324      10,255

Other income (expense):
   Interest income, net..............................           686         797
   Net foreign exchange loss.........................           (14)       (894)
   Other income......................................            21          74
                                                          ----------  ----------
Income before income taxes...........................         9,017      10,232
Provision for income taxes...........................         2,254       2,865
                                                          ----------  ----------

      Net income.....................................     $   6,763   $   7,367
                                                          ==========  ==========
Basic earnings per share.............................     $    0.13   $    0.14
                                                          ==========  ==========
Weighted average shares outstanding - basic..........        51,156      51,205
                                                          ==========  ==========
Diluted earnings per share...........................     $    0.13   $    0.14
                                                          ==========  ==========
Weighted average shares outstanding - diluted........        53,273      53,953
                                                          ==========  ==========

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



                        NATIONAL INSTRUMENTS CORPORATION
                      CONSOLIDATED STATEMENTS OF CASH FLOWS
                                 (in thousands)
                                   (unaudited)
                                                            Three Months Ended
                                                                 March 31,
                                                          ----------------------
                                                             2003        2002
                                                          ----------  ----------
Cash flow from operating activities:
   Net income...........................................  $   6,763   $   7,367
   Adjustments to reconcile net income to cash provided
   by operating activities:
      Charges to income not requiring cash outlays:
        Depreciation and amortization...................      6,097       4,350
        Benefit from deferred income taxes..............       (582)     (1,456)
        Tax benefit from stock option plans.............        752         459
      Changes in operating assets and liabilities:
        Decrease (increase) in accounts receivable......        752      (6,550)
        Decrease in inventory...........................      1,677       1,800
        Decrease (increase) in prepaid expenses and
        other assets....................................      2,336      (3,376)
        (Decrease) increase in current liabilities......     (4,317)      1,853
                                                          ----------  ----------
      Net cash provided by operating activities.........     13,478       4,447
                                                          ----------  ----------

Cash flow from investing activities:
   Capital expenditures.................................     (3,113)     (6,871)
   Capitalization of internally developed software......     (4,581)       (377)
   Additions to other intangibles.......................     (3,516)       (228)
   Purchases of short-term investments..................    (37,272)    (49,084)
   Sales of short-term investments......................     29,875      42,282
                                                          ----------  ----------
      Net cash used in investing activities.............    (18,607)    (14,278)
                                                          ----------  ----------

Cash flow from financing activities:
   Net proceeds from issuance of common stock under
   employee plans.......................................      1,743       1,242
                                                          ----------  ----------
      Net cash provided by financing activities.........      1,743       1,242
                                                          ----------  ----------

Net decrease in cash and cash equivalents...............     (3,386)     (8,589)
Cash and cash equivalents at beginning of period........     40,240      49,089
                                                          ----------  ----------
Cash and cash equivalents at end of period..............  $  36,854   $  40,500
                                                          ==========  ==========

     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, 2002,  included in the Company's  annual report on Form
10-K,  filed with the  Securities  and  Exchange  Commission.  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 March 31, 2003 and December 31, 2002, and the
results of operations and cash flows for the three-month periods ended March 31,
2003 and 2002. Operating results for the three-month period ended March 31, 2003
are not necessarily  indicative of the results that may be expected for the year
ending December 31, 2003.


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 periods ended March 31, 2003 and 2002, respectively, are
as follows (in thousands):
                                                        March 31,
                                                 -----------------------
                                                       (unaudited)
                                                    2003         2002
                                                 ----------   ----------
Weighted average shares outstanding-basic.....      51,156       51,205
Plus: Common share equivalents
    Stock options.............................       2,117        2,748
                                                 ----------   ----------
Weighted average shares outstanding-diluted...      53,273       53,953
                                                 ==========   ==========

Stock options to acquire  1,537,000 and 1,356,000  shares for the quarters ended
March 31, 2003 and 2002,  respectively,  were  excluded in the  computations  of
diluted  EPS  because  the  effect of  including  the  options  would  have been
anti-dilutive.


NOTE 3 - Inventories

Inventories consist of the following (in thousands):

                               March 31,   December 31,
                                 2003          2002
                              (unaudited)
                              -----------  ------------
Raw materials.............    $  17,400    $   21,127
Work-in-process...........        2,256         1,324
Finished goods............       17,914        16,796
                              -----------  ------------
                              $  37,570    $   39,247
                              ===========  ============

NOTE 4 - Comprehensive Income

Total  comprehensive  income for the  quarters  ended March 31, 2003 and 2002 is
$6.6 million and $4.9 million,  respectively,  and included other  comprehensive
losses of $139,000 and $2.4  million for the  quarters  ended March 31, 2003 and
2002, respectively.



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  Stock
Option 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
                                                                   March 31,
                                                              ------------------
                                                                 (unaudited)
                                                                2003      2002
                                                              --------  --------
Net income, as reported...................................    $ 6,763   $ 7,367

Stock-based compensation included in reported 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..............................     (2,157)   (2,257)
                                                              --------  --------
Pro-forma net income......................................    $ 4,606   $ 5,110
                                                              --------  --------

Earnings per share:
Basic - as reported.......................................    $  0.13   $  0.14
Basic - pro-forma.........................................    $  0.09   $  0.10
Diluted - as reported.....................................    $  0.13   $  0.14
Diluted - pro-forma.......................................    $  0.09   $  0.09


NOTE 6 - Warranty Expense

The Company offers a one-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):

                                                    Three Months    Year Ended
                                                       Ended       December 31,
                                                      March 31,        2002
                                                        2003
                                                    (unaudited)
                                                    ------------   ------------
Balance at the beginning of the period............   $     715      $     865
Accruals for warranties issued during the period..         247            988
Settlements made (in cash or in kind) during the
period............................................        (247)        (1,138)
                                                    ------------   ------------
Balance at the end of the period..................   $     715      $     715
                                                    ============   ============


NOTE 7 - 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 North
America.  Substantially all of the Company's goodwill is recorded in Europe. 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
                                                       March 31,
                                                ----------------------
                                                     (unaudited)
                                                   2003        2002
                                                ----------  ----------
 Net sales:
 Americas:
   Unaffiliated customer sales..........        $  46,659   $  47,648
   Geographic transfers.................           13,891      13,180
                                                ----------  ----------
                                                   60,550      60,828
                                                ----------  ----------
 Europe:
   Unaffiliated customer sales..........           31,276      29,000
   Geographic transfers.................           11,203       7,513
                                                ----------  ----------
                                                   42,479      36,513
                                                ----------  ----------
 Asia Pacific:
   Unaffiliated customer sales..........           21,238      18,091
                                                ----------  ----------
 Eliminations...........................          (25,094)    (20,693)
                                                ----------  ----------
                                                $  99,173   $  94,739
                                                ==========  ==========

                                                  Three Months Ended
                                                       March 31,
                                                ----------------------
                                                     (unaudited)
                                                   2003        2002
                                                ----------  ----------
 Operating income:
 Americas...............................        $   5,897   $   8,856
 Europe.................................            8,211       7,914
 Asia Pacific...........................            9,467       9,418
 Unallocated:
 Research and development expenses......          (15,251)    (15,933)
                                                ----------  ----------
                                                $   8,324   $  10,255
                                                ==========  ==========

                                                 March 31,     December 31,
                                                   2003           2002
                                                (unaudited)
                                                -----------   -------------
Identifiable assets:
Americas................................        $  383,803    $   373,066
Europe..................................            54,447         63,600
Asia Pacific............................            24,315         22,048
                                                -----------   -------------
                                                $  462,565    $   458,714
                                                ===========   =============

Total sales outside the United States for the quarters  ended March 31, 2003 and
2002 were $56.8 million and $51.2 million, respectively.



NOTE 8 - Litigation

The  Company  has filed  two  complaints  in the U.S.  District  Court,  Eastern
District of Texas (Marshall Division) against The MathWorks,  Inc. ("Defendant")
for patent  infringement.  The Company filed the first  complaint on January 25,
2001,  claiming  that the  Defendant  infringes  certain of the  Company's  U.S.
patents.  The  Defendant  challenges  the validity and  enforceability  of these
patents and asserts that it does not infringe the claims of these patents. Trial
on the first case  concluded  and on January  30,  2003,  the jury  awarded  the
Company  specified  damages,  which  have not  been  recorded  in the  financial
statements of the Company pending the court's review of post trial motions.  The
Company is currently  seeking an  injunction  of the sale of certain  infringing
products of the Defendant. Defendant challenges the verdict, the propriety of an
injunction,  and requests a stay of the injunction pending appeal. In the second
complaint,  filed  October  21,  2002,  the Company  claims  that the  Defendant
infringes certain other of the Company's U.S. patents.  The Defendant challenges
the validity and  enforceability  of these  patents and asserts that it does not
infringe the claims of these  patents.  In this case, the Company seeks monetary
damages and injunction of the sale of certain  products of the Defendant as well
as attorney's fees and costs.



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
"expects,"  "plans,"  "may," "will,"  "believes,"  "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 Issues and Outlook 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.

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
                                                March 31,
                                         -----------------------
                                            2003          2002
                                         ----------   ----------
Net sales:
   North America                             47.1%        50.3%
   Europe                                    31.5         30.6
   Asia Pacific                              21.4         19.1
                                         ----------   ----------
   Consolidated net sales                   100.0        100.0
Cost of sales                                26.2         26.8
                                         ----------   ----------
   Gross profit                              73.8         73.2
Operating expenses:
   Sales and marketing                       38.9         37.4
   Research and development                  15.4         16.8
   General and administrative                11.1          8.2
                                         ----------   ----------
   Total operating expenses                  65.4         62.4
                                         ----------   ----------
      Operating income                        8.4         10.8
Other income (expense):
   Interest income, net                       0.7          0.8
   Net foreign exchange loss                   --         (0.9)
   Other income                                --          0.1
                                         ----------   ----------
Income before income taxes                    9.1         10.8
Provision for income taxes                    2.3          3.0
                                         ----------   ----------
   Net income                                 6.8%         7.8%
                                         ==========   ==========

     Net Sales.  Consolidated  net sales for the first quarter of 2003 increased
by $4.4  million or 5% from the  comparable  prior  year  quarter.  The  Company
believes the increase in sales is primarily  attributable to the introduction of
new and upgraded  products and an increased  market  acceptance of the Company's
products in Asia. North American sales in the first quarter of 2003 decreased by
2% from the first quarter of 2002.

     Sales outside of North America,  as a percentage of consolidated  sales for
the  quarter  ended  March  31,  2003,  increased  to  52.9%  from  49.7% in the
comparable  2002 period.  Compared to the first  quarter of 2002,  the Company's
European sales  increased by 8% to $31.3 million for the quarter ended March 31,
2003.  Sales in Asia Pacific  increased  by 17% to $21.2  million in the quarter
ended March 31, 2003  compared to the same period in 2002.  The Company  expects
sales outside of North America to continue to represent a significant portion of
its revenue. 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 foreign  currency  exchange
rates.  Between the first quarter of 2002 and the first quarter of 2003,  net of
hedging  results,  the change in exchange rates had the effect of increasing the
Company's  consolidated  sales  by 1%;  increasing  European  sales  by 11%  and
decreasing   sales  in  Asia  Pacific  by  21%.  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
$400,000  for the quarter  ended  March 31,  2003 as compared to the  comparable
prior year period.



     Gross Profit.  As a percentage of sales,  gross profit increased to 74% for
the first quarter of 2003 from 73% for the first quarter of 2002. The relatively
high software  content of the Company's  products is  demonstrated  in the gross
margins achieved by the Company.  Approximately  60% of the higher margin in the
first quarter of 2003 is attributable to the impact of fixed charges relative to
higher sales volume. The remaining fraction of the higher margin is attributable
to favorable foreign exchange rates.  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 first quarter of
2003 increased to $38.5 million, a 9% increase, as compared to the first quarter
of 2002. As a percentage of net sales,  sales and marketing  expenses were 38.9%
and 37.4% for the three months ended March 31, 2003 and 2002, respectively.  The
increase in these expenses in absolute  amounts and as a percentage of sales was
attributable to the increase in international sales and marketing personnel. 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  decreased to
$15.3 million for the quarter  ended March 31, 2003, a 4% decrease,  as compared
to $15.9  million for the three months ended March 31, 2002.  As a percentage of
net sales,  research and development expenses decreased to 15.4% for the quarter
ended March 31,  2003,  from 16.8% for the quarter  ended  March 31,  2002.  The
decrease  in  research  and  development  costs  in  absolute  amounts  and as a
percentage  of sales was due to increases in  capitalized  software  development
costs and was mitigated by the  increases in personnel  costs from the hiring of
additional product development engineers. 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
$1.4  million  and  $865,000  for the  quarters  ended  March 31, 2003 and 2002,
respectively.  Software  development  costs  capitalized  were $4.6  million and
$400,000  for the  quarters  ended  March 31, 2003 and 2002,  respectively.  The
Company expects that capitalization of software  development costs will decrease
in the  remaining  nine  months of 2003.  The amounts  capitalized  in the first
quarter of 2003 related to the development of new and upgraded products, most of
which are expected to be completed and released by the end of the second quarter
of 2003.  Any  significant  delay in releasing  these new products  could have a
material  adverse effect on the ultimate  success of a product and other related
products  could impede  continued  sales of predecessor  products,  any of which
could have a material adverse effect on the Company's operating results.

     General and  Administrative.  General and  administrative  expenses for the
first  quarter  ended March 31, 2003  increased  42% to $11.0  million from $7.8
million for the  comparable  prior year period.  As a  percentage  of net sales,
general and  administrative  expenses  increased to 11.1% for the quarter  ended
March 31, 2003, from 8.2% for the first quarter of 2002. The increase in general
and administrative expenses in absolute amounts and as a percentage of sales for
the quarter  ended March 31,  2003,  from the  comparable  prior year period was
primarily  attributable to increased litigation costs of $2.2 million associated
with a legal  action by the  Company  brought  against  The  MathWorks,  Inc. to
enforce the Company's intellectual property (see Note 8 of Notes to Consolidated
Financial  Statements).  The Company  expects  that  general and  administrative
expenses in future periods will increase in absolute  amounts and will fluctuate
as a percentage of revenue.

     Interest  Income,  Net.  Net interest  income in the first  quarter of 2003
decreased to $690,000 from  $800,000 in the first quarter of 2002.  The decrease
in  interest  income in the first  quarter  of 2003 was  primarily  due to lower
yields on the Company's  investments.  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 in the first  quarter of 2003 of $14,000  compared to losses of
$900,000  in the first  quarter  of 2002.  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 $1.7
million  for the quarter  ended March 31, 2003 and reduced the foreign  exchange
losses by $2.5 million for the quarter ended March 31, 2002.

     Provision  for Income Taxes.  The  provision  for income taxes  reflects an
effective  tax rate of 25% for the three months ended March 31, 2003 and 28% for
the three  months  ended March 31,  2002.  The  decrease in the  effective  rate
resulted from income tax benefits  attributable to the  extraterritorial  income
inclusion and a change in the distribution of income among taxing  jurisdictions
particularly the impact of the Company's new manufacturing  facility in Hungary.
The  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 March 31, 2003,  the Company had working
capital of  approximately  $214.3 million compared to $211.5 million at December
31, 2002. Net cash provided by operating activities in the first quarter of 2003
totaled $13.5 million.

     Accounts receivable decreased to $62.2 million at March 31, 2003 from $63.0
million at December 31, 2002.  Receivable  days  outstanding  decreased to 57 at
March 31, 2003 compared to 58 at March 31, 2002. Consolidated inventory balances
decreased to $37.6  million at March 31, 2003 from $39.2 million at December 31,
2002. Inventory turns decreased to 2.7 for the quarter ended March 31, 2003 from
turns of 3.3 for the quarter ended March 31, 2002.  Cash used in the first three
months of 2003 for the  purchase of the  property  and  equipment  totaled  $3.1
million,  for the capitalization of internally  developed software costs totaled
$4.6 million, and additions to other intangibles totaled $3.5 million.

     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 March 31, 2003, the Company had no debt outstanding.

     The Company believes that the 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. At March 31, 2003, 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 exchanges rates on its results of operations and financial position.
Based on the foreign  exchange  instruments  outstanding  at March 31, 2003,  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  $12.0 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 March 31, 2003 was $121.0  million.  Investments  with
maturities beyond one year may be 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 the marketable  securities portfolio by
investing  in  multiple  types of  investment-grade  securities.  The  Company's
investment  portfolio is primarily  invested in  short-term  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 March 31, 2003, a 100 basis point
increase or decrease in interest rates would result in a decrease or increase of
approximately  $600,000,  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 Slowdown. As occurred in 2001 and 2002, 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.  The Company could also be subject
to or  impacted  by acts of  terrorism  and/or the  effects  that  terrorism  or
continued/prolonged  U.S.  military  action would have on the U.S. and/or Global
economies.  Additionally,  the  Company  could be impacted by the effects of the
SARS  virus,  either  through  increased  difficulty  or costs of the  export of
products into affected  regions,  the import of components  used in our 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 two years.  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 2003.  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;  additional
litigation  expenses  related to intellectual  property  litigation.  Any future
decreased  demand for our 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,  with the exception of 2001,  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's  results of operations in
the third  quarter of 2003 may be  adversely  affected by lower sales  levels in
Europe, which typically occur during the summer months. 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 significantly 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  in part 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 Increased  Development of Web Site. The Company has
devoted significant  resources in developing 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.  Failure  to
successfully  maintain the Web site and to protect it from hackers  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  achieve  reliable  regional
management  information  systems to control  costs and  improve  the  ability to
deliver its products in substantially  all of its direct markets  worldwide.  No
assurance  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 ended  September 30, 2003, the Company will be upgrading
its Americas  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 our customers,
bill and track our customers,  fulfill contractual obligations and otherwise run
our 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 ensure  compliance  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 first quarter of 2003 and the first quarter of 2002,  net of hedging
results, the change in exchange rates had the effect of increasing the Company's
consolidated sales by 1% as compared to the first quarter of 2002. Since most of
the  Company's  international  operating  expenses  are also  included  in local
currencies,  the change in exchange rates had the effect of increasing operating
expenses  by $400,000  for the  quarter  ended March 31, 2003 as compared to the
comparable prior year period.  If the U.S. dollar  strengthens in the future, it
could have a material 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  recruit  and train the local  work  force and is  continuing  to
develop  and  implement  information  systems to  support  its  operation.  This
facility  and its  operation  are also  subject to risks  associated  with a 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,  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 may not be available in the future
as the ETI  has  been  ruled  an  illegal  export  subsidy  by the  World  Trade
Organization.  The repeal of the ETI would result in the elimination of this tax
benefit thereby increasing 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  Stock  Option 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 discussions related to possible new regulations  regarding
the  accounting  treatment for stock  options.  The Company will comply with any
changes in the  accounting  of stock  options  required by the FASB. If the fair
value based method of accounting  for stock options  established  under SFAS No.
123 were adopted effective January 1, 2003, for the options granted during 2003,
the  Company  estimates  it  would  have  recognized  stock  option  expense  of
approximately  $11,000. If the Company were to adopt the accounting provision of
SFAS No. 123, the adoption would be prospective.  Accordingly, the Company would
expect  stock  option  expense to  increase  in the future if  additional  stock
options are issued.



     Proprietary  Rights and  Intellectual  Property  Litigation.  The Company's
success depends in part 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  may from time to time,  engage in
litigation  to protect its  intellectual  property  rights.  In  monitoring  and
policing its intellectual  property rights, the Company may be required to spend
significant  resources.  Over the next nine months, the Company expects to incur
litigation  expenses of  approximately  $3.2 million  related to current  patent
litigation.  Due to the  inherent  uncertainties  of  litigation,  there  may be
significant  changes  in the  amount  and  timing  of these  expected  expenses.
Additionally,  as is typical in the industry,  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  this  litigation  or  any  other
intellectual  property  litigation  initiated  in  the  future  will  not  cause
significant  litigation  expense,  liability  and a  diversion  of  management's
attention  which may have a material  adverse effect on the Company's  operating
results.

     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 effect on 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 to the current  degree.  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 technical  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,  after
evaluating the effectiveness of the Company's disclosure controls and procedures
(as defined in Rules  13a-14(c) and 15d-14(c) of the Securities  Exchange Act of
1934,  as amended)  as of a date within 90 days of the filing of this  quarterly
report (the "Evaluation  Date"), have concluded that, as of the Evaluation Date,
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. There were no significant changes in the Company's internal controls
or in other  factors  that  could  significantly  affect the  internal  controls
subsequent to the Evaluation Date.



                           PART II - OTHER INFORMATION



ITEM 1. LEGAL PROCEEDINGS

     The Company has filed two complaints in the U.S.  District  Court,  Eastern
District of Texas (Marshall Division) against The MathWorks,  Inc. ("Defendant")
for patent  infringement.  The Company filed the first  complaint on January 25,
2001,  claiming  that the  Defendant  infringes  certain of the  Company's  U.S.
patents.  The  Defendant  challenges  the validity and  enforceability  of these
patents and asserts that it does not infringe the claims of these patents. Trial
on the first case  concluded  and on January  30,  2003,  the jury  awarded  the
Company  specified  damages,  which  have not  been  recorded  in the  financial
statements of the Company pending the court's review of post trial motions.  The
Company is currently  seeking an  injunction  of the sale of certain  infringing
products of the Defendant. Defendant challenges the verdict, the propriety of an
injunction,  and requests a stay of the injunction pending appeal. In the second
complaint,  filed  October  21,  2002,  the Company  claims  that the  Defendant
infringes certain other of the Company's U.S. patents.  The Defendant challenges
the validity and  enforceability  of these  patents and asserts that it does not
infringe the claims of these  patents.  In this case, the Company seeks monetary
damages and injunction of the sale of certain  products of the Defendant as well
as attorney's fees and costs.


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 AND REPORTS ON FORM 8-K

(a) Exhibits.

      3.1*  Certificate of Incorporation of the Company
      3.2*  Bylaws of the Company
      4.1*  Specimen of Common Stock certificate of the Company
      4.2*  Rights Agreement dated as of May 19, 1994, between the Company and
            The First National Bank of Boston
      10.1* Form of Indemnification Agreement
      10.2* 1994 Incentive Plan**
      10.3* 1994 Employee Stock Purchase Plan**
      10.4  Agreement regarding Terms of Employment incorporated by reference
            from Exhibit 10.4 of the Company's 10-K filed January 28, 2003**
      11.1  Computation of Earnings Per Share
      99.1  Certification of Chief Executive Officer and Chief Financial Officer

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

      **    Management Contract or Compensatory Plan or Arrangement

(b) Reports on Form 8-K.

      No reports on Form 8-K were filed by the Company  during the quarter ended
      March 31, 2003.



                                     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:  May 12, 2003



I, James Truchard, certify that:


1.   I have reviewed this quarterly report on Form 10-Q of National  Instruments
     Corporation;


2.   Based on my knowledge,  this  quarterly  report does not contain any untrue
     statement of a material fact or omit to state a material fact  necessary to
     make the statements  made, in light of the  circumstances  under which such
     statements  were made, not misleading with respect to the period covered by
     this quarterly report;


3.   Based on my  knowledge,  the  financial  statements,  and  other  financial
     information  included  in this  quarterly  report,  fairly  present  in all
     material respects the financial  condition,  results of operations and cash
     flows of the  registrant  as of, and for,  the  periods  presented  in this
     quarterly report;


4.   The  registrant's  other  certifying  officers  and I are  responsible  for
     establishing and maintaining disclosure controls and procedures (as defined
     in Exchange Act Rules 13a-14 and 15d-14) for the registrant and we have:


     a)   designed  such  disclosure  controls  and  procedures  to ensure  that
          material  information  relating  to  the  registrant,   including  its
          consolidated subsidiaries,  is made known to us by others within those
          entities,  particularly  during  the  period in which  this  quarterly
          report is being prepared;


     b)   evaluated the  effectiveness of the registrant's  disclosure  controls
          and procedures as of a date within 90 days prior to the filing date of
          this quarterly report (the "Evaluation Date"); and


     c)   presented  in  this  quarterly   report  our  conclusions   about  the
          effectiveness  of the disclosure  controls and procedures based on our
          evaluation as of the Evaluation Date;


5.   The registrant's other certifying  officers and I have disclosed,  based on
     our most recent  evaluation,  to the  registrant's  auditors  and the audit
     committee of  registrant's  board of directors (or persons  performing  the
     equivalent functions):


     a)   all  significant  deficiencies  in the design or operation of internal
          controls  which could  adversely  affect the  registrant's  ability to
          record,  process,   summarize  and  report  financial  data  and  have
          identified for the  registrant's  auditors any material  weaknesses in
          internal controls; and


     b)   any fraud, whether or not material,  that involves management or other
          employees who have a  significant  role in the  registrant's  internal
          controls; and


6.   The  registrant's  other  certifying  officers and I have indicated in this
     quarterly report whether or not there were significant  changes in internal
     controls  or in other  factors  that could  significantly  affect  internal
     controls  subsequent to the date of our most recent  evaluation,  including
     any corrective actions with regard to significant deficiencies and material
     weaknesses.


Date: May 12, 2003


                                                /s/ James Truchard
                                                    James Truchard
                                                    Chief Executive Officer



I, Alex Davern, certify that:


1.   I have reviewed this quarterly report on Form 10-Q of National  Instruments
     Corporation;


2.   Based on my knowledge,  this  quarterly  report does not contain any untrue
     statement of a material fact or omit to state a material fact  necessary to
     make the statements  made, in light of the  circumstances  under which such
     statements  were made, not misleading with respect to the period covered by
     this quarterly report;


3.   Based on my  knowledge,  the  financial  statements,  and  other  financial
     information  included  in this  quarterly  report,  fairly  present  in all
     material respects the financial  condition,  results of operations and cash
     flows of the  registrant  as of, and for,  the  periods  presented  in this
     quarterly report;


4.   The  registrant's  other  certifying  officers  and I are  responsible  for
     establishing and maintaining disclosure controls and procedures (as defined
     in Exchange Act Rules 13a-14 and 15d-14) for the registrant and we have:


     a)   designed  such  disclosure  controls  and  procedures  to ensure  that
          material  information  relating  to  the  registrant,   including  its
          consolidated subsidiaries,  is made known to us by others within those
          entities,  particularly  during  the  period in which  this  quarterly
          report is being prepared;


     b)   evaluated the  effectiveness of the registrant's  disclosure  controls
          and procedures as of a date within 90 days prior to the filing date of
          this quarterly report (the "Evaluation Date"); and


     c)   presented  in  this  quarterly   report  our  conclusions   about  the
          effectiveness  of the disclosure  controls and procedures based on our
          evaluation as of the Evaluation Date;


5.   The registrant's other certifying  officers and I have disclosed,  based on
     our most recent  evaluation,  to the  registrant's  auditors  and the audit
     committee of  registrant's  board of directors (or persons  performing  the
     equivalent functions):


     a)   all  significant  deficiencies  in the design or operation of internal
          controls  which could  adversely  affect the  registrant's  ability to
          record,  process,   summarize  and  report  financial  data  and  have
          identified for the  registrant's  auditors any material  weaknesses in
          internal controls; and


     b)   any fraud, whether or not material,  that involves management or other
          employees who have a  significant  role in the  registrant's  internal
          controls; and


6.   The  registrant's  other  certifying  officers and I have indicated in this
     quarterly report whether or not there were significant  changes in internal
     controls  or in other  factors  that could  significantly  affect  internal
     controls  subsequent to the date of our most recent  evaluation,  including
     any corrective actions with regard to significant deficiencies and material
     weaknesses.


Date: May 12, 2003


                                                /s/ Alex Davern
                                                    Alex Davern
                                                    Chief Financial Officer



                        NATIONAL INSTRUMENTS CORPORATION

                                INDEX TO EXHIBITS



      Exhibit No.                   Description                     Page
      -----------                   -----------                     ----
         11.1            Statement Regarding Computation             24
                         of Earnings per Share

         99.1            Certification of Chief Executive            25
                         Officer and Chief Financial
                         Officer