<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE INCOME
STATEMENT FOR THE TWELVE-MONTH PERIOD ENDED DECEMBER 31, 1999, AND THE BALANCE
SHEET AS OF DECEMBER 31, 1999, AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO
SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               DEC-31-1999
<CASH>                                           7,507
<SECURITIES>                                    15,117
<RECEIVABLES>                                   14,213
<ALLOWANCES>                                       257
<INVENTORY>                                     13,176
<CURRENT-ASSETS>                                55,871
<PP&E>                                          25,362
<DEPRECIATION>                                  14,625
<TOTAL-ASSETS>                                  74,424
<CURRENT-LIABILITIES>                            9,436
<BONDS>                                            213
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                            76
<OTHER-SE>                                      61,744
<TOTAL-LIABILITY-AND-EQUITY>                    74,424
<SALES>                                         46,965
<TOTAL-REVENUES>                                56,070
<CGS>                                           16,686
<TOTAL-COSTS>                                   21,196
<OTHER-EXPENSES>                                27,500
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                  45
<INCOME-PRETAX>                                  8,208
<INCOME-TAX>                                     2,627
<INCOME-CONTINUING>                              5,581
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     5,581
<EPS-BASIC>                                       0.74
<EPS-DILUTED>                                     0.70