
<TABLE> <S> <C>


<ARTICLE>                       5
<LEGEND>                THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION
                EXTRACTED FROM THE COMPANY'S CONSOLIDATED FINANCIAL
                STATEMENTS FOR THE THREE MONTHS ENDED MARCH 31, 1997
                AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
                FINANCIAL STATEMENTS
</LEGEND>
       
<S>                                     <C>
<PERIOD-TYPE>                           3-MOS
<FISCAL-YEAR-END>                       DEC-31-1997
<PERIOD-START>                          JAN-01-1997
<PERIOD-END>                            MAR-31-1997
<CASH>                                  8,507
<SECURITIES>                            22,650
<RECEIVABLES>                           26,920
<ALLOWANCES>                            (1,889)
<INVENTORY>                             16,040
<CURRENT-ASSETS>                        74,985
<PP&E>                                  55,139
<DEPRECIATION>                          45,563
<TOTAL-ASSETS>                          86,541
<CURRENT-LIABILITIES>                   33,507
<BONDS>                                 0
<PREFERRED-MANDATORY>                   69,970
<PREFERRED>                             0
<COMMON>                                455
<OTHER-SE>                              (81,668)
<TOTAL-LIABILITY-AND-EQUITY>            86,541
<SALES>                                 21,081
<TOTAL-REVENUES>                        21,081
<CGS>                                   10,562
<TOTAL-COSTS>                           21,956<F1>
<OTHER-EXPENSES>                        (5,724)<F2>
<LOSS-PROVISION>                        0
<INTEREST-EXPENSE>                      (747)<F3>
<INCOME-PRETAX>                         5,596
<INCOME-TAX>                            652
<INCOME-CONTINUING>                     4,944
<DISCONTINUED>                          0
<EXTRAORDINARY>                         0
<CHANGES>                               0
<NET-INCOME>                            4,944
<EPS-PRIMARY>                           0.11
<EPS-DILUTED>                           0.11

<FN>
 <F1>           INCLUDES S&A AND RD&E OF 7,649 AND 3,748 RESPECTIVELY
 <F2>           INCLUDES ROYALTY INCOME OF 5,782
 <F3>           NETS INTEREST INCOME OF 778 AND INTEREST EXPENSE OF 31
</FN>
        

</TABLE>
