<ARTICLE>                  5
<MULTIPLIER>     1,000
       
                                 
<PERIOD-TYPE>                       9-MOS
<FISCAL-YEAR-END>                                             DEC-31-1997
<PERIOD-END>                                                  SEP-30-1998
<CASH>                                                              6,921
<SECURITIES>                                                       35,159
<RECEIVABLES>                                                       2,799
<ALLOWANCES>                                                          954
<INVENTORY>                                                        11,862
<CURRENT-ASSETS>                                                   62,651
<PP&E>                                                             24,085
<DEPRECIATION>                                                     14,121
<TOTAL-ASSETS>                                                     84,528
<CURRENT-LIABILITIES>                                              22,221
<BONDS>                                                             3,204
<PREFERRED-MANDATORY>                                                   0
<PREFERRED>                                                            10
<COMMON>                                                              484
<OTHER-SE>                                                         57,893
<TOTAL-LIABILITY-AND-EQUITY>                                       84,528
<SALES>                                                             6,331
<TOTAL-REVENUES>                                                   61,367
<CGS>                                                              10,644
<TOTAL-COSTS>                                                      10,644
<OTHER-EXPENSES>                                                   12,184
<LOSS-PROVISION>                                                       63
<INTEREST-EXPENSE>                                                    274
<INCOME-PRETAX>                                                    24,300
<INCOME-TAX>                                                        4,920
<INCOME-CONTINUING>                                                19,380
<DISCONTINUED>                                                          0
<EXTRAORDINARY>                                                         0
<CHANGES>                                                               0
<NET-INCOME>                                                       19,380
<EPS-PRIMARY>                                                         .40
<EPS-DILUTED>                                                         .39