<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE INCOME
STATEMENT FOR THE NINE-MONTH PERIOD ENDED SEPTEMBER 30, 1998, AND THE BALANCE
SHEET AS OF SEPTEMBER 30, 1998 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO
SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               SEP-30-1998
<CASH>                                           5,575
<SECURITIES>                                     7,546
<RECEIVABLES>                                   13,487
<ALLOWANCES>                                       502
<INVENTORY>                                     15,017
<CURRENT-ASSETS>                                46,178
<PP&E>                                          21,374
<DEPRECIATION>                                  11,727
<TOTAL-ASSETS>                                  63,585
<CURRENT-LIABILITIES>                            7,704
<BONDS>                                            468
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                            74
<OTHER-SE>                                      53,403
<TOTAL-LIABILITY-AND-EQUITY>                    63,585
<SALES>                                         19,575
<TOTAL-REVENUES>                                26,372
<CGS>                                            8,239
<TOTAL-COSTS>                                   11,210
<OTHER-EXPENSES>                                19,332
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                  19
<INCOME-PRETAX>                                (3,552)
<INCOME-TAX>                                     (162)
<INCOME-CONTINUING>                            (3,390)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   (3,390)
<EPS-PRIMARY>                                    (.45)
<EPS-DILUTED>                                    (.45)