
<TABLE> <S> <C>


<ARTICLE>                                     5
<LEGEND>                THE SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION
                        EXTRACTED FROM THE COMPANY'S CONSOLIDATED  FINANCIAL
                        STATEMENTS FOR THE THREE MONTHS ENDED JUNE 30, 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>                                         APR-01-1997
<PERIOD-END>                                           JUN-30-1997
<CASH>                                                 6,917
<SECURITIES>                                           20,304
<RECEIVABLES>                                          26,574
<ALLOWANCES>                                           (1,879)
<INVENTORY>                                            17,737
<CURRENT-ASSETS>                                       72,446
<PP&E>                                                 54,854
<DEPRECIATION>                                         45,169
<TOTAL-ASSETS>                                         83,816
<CURRENT-LIABILITIES>                                  30,730
<BONDS>                                                0
<PREFERRED-MANDATORY>                                  69,970
<PREFERRED>                                            0
<COMMON>                                               456
<OTHER-SE>                                             (79,209)
<TOTAL-LIABILITY-AND-EQUITY>                           83,816
<SALES>                                                21,299
<TOTAL-REVENUES>                                       21,299
<CGS>                                                  10,681
<TOTAL-COSTS>                                          20,988    <F1>
<OTHER-EXPENSES>                                       (1,565)   <F2>
<LOSS-PROVISION>                                       0
<INTEREST-EXPENSE>                                     (712)     <F3>
<INCOME-PRETAX>                                        2,588
<INCOME-TAX>                                           252
<INCOME-CONTINUING>                                    2,336
<DISCONTINUED>                                         0
<EXTRAORDINARY>                                        0
<CHANGES>                                              0
<NET-INCOME>                                           2,336
<EPS-PRIMARY>                                          0.05
<EPS-DILUTED>                                          0.05

<FN>
 <F1>                   INCLUDES S&A AND RD&E OF 6,417 AND 3,890 RESPECTIVELY
 <F2>                   INCLUDES ROYALTY INCOME OF 1,562
 <F3>                   NETS INTEREST INCOME OF 735 AND INTEREST EXPENSE OF 23
</FN>
        

</TABLE>
