<ARTICLE>                     5
<LEGEND>
     ARTICLE 5 FOR 1997 10-K
</LEGEND>
<MULTIPLIER>                                     1,000
       
                             
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               DEC-31-1998
<CASH>                                          20,059
<SECURITIES>                                    32,218
<RECEIVABLES>                                   15,958
<ALLOWANCES>                                       975
<INVENTORY>                                      5,102
<CURRENT-ASSETS>                                75,418
<PP&E>                                          24,658
<DEPRECIATION>                                  14,961
<TOTAL-ASSETS>                                  99,523
<CURRENT-LIABILITIES>                           20,666
<BONDS>                                          3,049
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                         10
<COMMON>                                           484
<OTHER-SE>                                      75,314
<TOTAL-LIABILITY-AND-EQUITY>                    99,523
<SALES>                                          6,751
<TOTAL-REVENUES>                                99,221
<CGS>                                           17,577
<TOTAL-COSTS>                                   17,577
<OTHER-EXPENSES>                                17,166
<LOSS-PROVISION>                                    84
<INTEREST-EXPENSE>                                 367
<INCOME-PRETAX>                                 46,229
<INCOME-TAX>                                     9,261
<INCOME-CONTINUING>                             36,968
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    36,968
<EPS-PRIMARY>                                      .76
<EPS-DILUTED>                                      .75