<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED) AT, AND FOR THE SIX MONTHS ENDED
JUNE 30, 1999, AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL
STATEMENTS.
</LEGEND>

                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-END>                               JUN-30-1999
<CASH>                                      18,320,000
<SECURITIES>                                17,769,000
<RECEIVABLES>                                5,855,000
<ALLOWANCES>                                   307,000
<INVENTORY>                                  8,318,000
<CURRENT-ASSETS>                            52,070,000
<PP&E>                                      12,383,000
<DEPRECIATION>                               4,274,000
<TOTAL-ASSETS>                              63,021,000
<CURRENT-LIABILITIES>                        9,978,000
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                       166,000
<OTHER-SE>                                  52,858,000
<TOTAL-LIABILITY-AND-EQUITY>                63,021,000
<SALES>                                     25,099,000
<TOTAL-REVENUES>                            59,287,000
<CGS>                                       17,411,000
<TOTAL-COSTS>                               49,483,000
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               3,000
<INCOME-PRETAX>                             10,695,000
<INCOME-TAX>                                   667,000
<INCOME-CONTINUING>                         10,028,000
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                10,028,000
<EPS-BASIC>                                        .62
<EPS-DILUTED>                                      .60