<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>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               JUN-30-1999
<CASH>                                          43,241
<SECURITIES>                                    26,775
<RECEIVABLES>                                   16,984
<ALLOWANCES>                                       844
<INVENTORY>                                      4,381
<CURRENT-ASSETS>                                91,643
<PP&E>                                          14,950
<DEPRECIATION>                                   4,839
<TOTAL-ASSETS>                                 103,449
<CURRENT-LIABILITIES>                           15,477
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           178
<OTHER-SE>                                      87,794
<TOTAL-LIABILITY-AND-EQUITY>                   103,449
<SALES>                                         35,036
<TOTAL-REVENUES>                                37,992
<CGS>                                            7,471
<TOTAL-COSTS>                                   28,837
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                  1,684
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                              1,684
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     1,684
<EPS-BASIC>                                        .09
<EPS-DILUTED>                                      .09