<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE INCOME
STATEMENT FOR THE THREE-MONTH PERIOD ENDED MARCH 31, 2000, AND THE BALANCE SHEET
AS OF MARCH 31, 2000, AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-2000
<PERIOD-START>                             JAN-01-2000
<PERIOD-END>                               MAR-31-2000
<CASH>                                          15,555
<SECURITIES>                                     8,531
<RECEIVABLES>                                   19,369
<ALLOWANCES>                                       255
<INVENTORY>                                     12,830
<CURRENT-ASSETS>                                62,414
<PP&E>                                          25,794
<DEPRECIATION>                                  15,483
<TOTAL-ASSETS>                                  80,358
<CURRENT-LIABILITIES>                           11,395
<BONDS>                                            174
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                            78
<OTHER-SE>                                      65,657
<TOTAL-LIABILITY-AND-EQUITY>                    80,358
<SALES>                                         13,309
<TOTAL-REVENUES>                                15,722
<CGS>                                            5,180
<TOTAL-COSTS>                                    6,246
<OTHER-EXPENSES>                                 7,280
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   8
<INCOME-PRETAX>                                  2,481
<INCOME-TAX>                                       794
<INCOME-CONTINUING>                              1,687
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     1,687
<EPS-BASIC>                                       0.22
<EPS-DILUTED>                                     0.20