<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED) AT, AND FOR THE THREE MONTHS ENDED
MARCH 31, 1999, AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL
STATEMENTS.
</LEGEND>
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               MAR-31-1999
<CASH>                                      19,600,000
<SECURITIES>                                15,732,000
<RECEIVABLES>                                4,522,000
<ALLOWANCES>                                   257,000
<INVENTORY>                                  8,221,000
<CURRENT-ASSETS>                            50,573,000
<PP&E>                                      11,051,000
<DEPRECIATION>                               3,948,000
<TOTAL-ASSETS>                              59,487,000
<CURRENT-LIABILITIES>                       11,067,000
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                       166,000
<OTHER-SE>                                  48,235,000
<TOTAL-LIABILITY-AND-EQUITY>                59,487,000
<SALES>                                     12,355,000
<TOTAL-REVENUES>                            29,354,000
<CGS>                                        8,499,000
<TOTAL-COSTS>                               24,495,000
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               2,000
<INCOME-PRETAX>                              5,319,000
<INCOME-TAX>                                   308,000
<INCOME-CONTINUING>                          5,011,000
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                 5,011,000
<EPS-PRIMARY>                                     0.31
<EPS-DILUTED>                                     0.30