<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED BALANCE SHEET AND THE CONSOLIDATED STATEMENT OF OPERATION
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-END>                               MAR-31-2000
<CASH>                                          32,537
<SECURITIES>                                    68,473
<RECEIVABLES>                                   27,959
<ALLOWANCES>                                         0
<INVENTORY>                                      9,336
<CURRENT-ASSETS>                               144,370
<PP&E>                                          40,493
<DEPRECIATION>                                  20,493
<TOTAL-ASSETS>                                 172,333
<CURRENT-LIABILITIES>                           18,056
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           543
<OTHER-SE>                                     149,099
<TOTAL-LIABILITY-AND-EQUITY>                   172,333
<SALES>                                         12,507
<TOTAL-REVENUES>                                17,400
<CGS>                                            2,336
<TOTAL-COSTS>                                   15,089
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                  30
<INCOME-PRETAX>                                  2,281
<INCOME-TAX>                                       796
<INCOME-CONTINUING>                              1,485
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     1,485
<EPS-BASIC>                                       0.03
<EPS-DILUTED>                                     0.03