<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM
                 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL
STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-2000
<PERIOD-START>                             JAN-01-2000
<PERIOD-END>                               JUN-30-2000
<CASH>                                          50,886
<SECURITIES>                                    20,986
<RECEIVABLES>                                   30,234
<ALLOWANCES>                                     1,231
<INVENTORY>                                      7,716
<CURRENT-ASSETS>                               109,813
<PP&E>                                          21,895
<DEPRECIATION>                                   7,418
<TOTAL-ASSETS>                                 134,413
<CURRENT-LIABILITIES>                           17,489
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           371
<OTHER-SE>                                     116,553
<TOTAL-LIABILITY-AND-EQUITY>                   134,413
<SALES>                                         62,303
<TOTAL-REVENUES>                                64,363
<CGS>                                           11,419
<TOTAL-COSTS>                                   40,317
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                 12,627
<INCOME-TAX>                                       246
<INCOME-CONTINUING>                             12,381
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    12,381
<EPS-BASIC>                                        .34
<EPS-DILUTED>                                      .32