<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM 1996 AND
1997 FINANCIAL STATEMENTS AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               MAR-31-1997
<CASH>                                           9,659
<SECURITIES>                                    42,673
<RECEIVABLES>                                   25,787
<ALLOWANCES>                                         0
<INVENTORY>                                     18,849
<CURRENT-ASSETS>                               107,888
<PP&E>                                          28,679
<DEPRECIATION>                                  11,641
<TOTAL-ASSETS>                                 127,457
<CURRENT-LIABILITIES>                           25,600
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                         9,385
<OTHER-SE>                                      91,379
<TOTAL-LIABILITY-AND-EQUITY>                   127,457
<SALES>                                         34,762
<TOTAL-REVENUES>                                34,762
<CGS>                                           19,908
<TOTAL-COSTS>                                   19,908
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                  7,514
<INCOME-TAX>                                     2,800
<INCOME-CONTINUING>                              4,714
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     4,714
<EPS-PRIMARY>                                     0.48
<EPS-DILUTED>                                     0.00