<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM FORM 10-Q
AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               SEP-30-1999
<CASH>                                          39,532
<SECURITIES>                                    30,972
<RECEIVABLES>                                   20,844
<ALLOWANCES>                                     1,017
<INVENTORY>                                      4,509
<CURRENT-ASSETS>                                95,845
<PP&E>                                          15,800
<DEPRECIATION>                                   5,330
<TOTAL-ASSETS>                                 108,032
<CURRENT-LIABILITIES>                           17,140
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           180
<OTHER-SE>                                      90,712
<TOTAL-LIABILITY-AND-EQUITY>                   108,032
<SALES>                                         56,367
<TOTAL-REVENUES>                                60,259
<CGS>                                           11,303
<TOTAL-COSTS>                                   46,179
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                  2,777
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                              2,777
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     2,777
<EPS-BASIC>                                        .16
<EPS-DILUTED>                                      .15