<ARTICLE> 5
<RESTATED> 
<MULTIPLIER> 1,000
<CURRENCY> US DOLLARS
       
                             
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-START>                             JAN-01-1996
<PERIOD-END>                               DEC-31-1996
<EXCHANGE-RATE>                                      1
<CASH>                                          27,876
<SECURITIES>                                    26,808
<RECEIVABLES>                                    8,329
<ALLOWANCES>                                   (1,077)
<INVENTORY>                                      3,653
<CURRENT-ASSETS>                                68,712
<PP&E>                                           4,180
<DEPRECIATION>                                       0
<TOTAL-ASSETS>                                  73,096
<CURRENT-LIABILITIES>                           13,058
<BONDS>                                            167
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           126
<OTHER-SE>                                      59,745
<TOTAL-LIABILITY-AND-EQUITY>                    73,096
<SALES>                                         48,833
<TOTAL-REVENUES>                                48,833
<CGS>                                           15,955
<TOTAL-COSTS>                                   15,955
<OTHER-EXPENSES>                                20,716
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                (93)
<INCOME-PRETAX>                                 13,964
<INCOME-TAX>                                     3,770
<INCOME-CONTINUING>                             10,194
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    10,194
<EPS-PRIMARY>                                     0.77
<EPS-DILUTED>                                     0.76<F1>
<FN>
<F1>ADDITIONAL CURRENT ASSET - DEFERRED          2,280
ADDITIONAL CURRENT ASSET - OTHER                   843
OTHER ASSET - DEFERRED TAXES
OTHER ASSETS - NET                                 204
INTEREST INCOME                                  1,895
</FN>