<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
STATEMENT OF OPERATIONS FOR THE YEAR ENDED DECEMBER 31, 1996 AND THE BALANCE
SHEET AS OF DECEMBER 31, 1996 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO
SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-START>                             JAN-01-1996
<PERIOD-END>                               DEC-31-1996
<CASH>                                          13,411
<SECURITIES>                                    19,264
<RECEIVABLES>                                   11,698
<ALLOWANCES>                                     (218)
<INVENTORY>                                      9,850
<CURRENT-ASSETS>                                55,050
<PP&E>                                          54,866
<DEPRECIATION>                                (32,879)
<TOTAL-ASSETS>                                 107,596
<CURRENT-LIABILITIES>                           17,459
<BONDS>                                          9,891
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                       109,128
<OTHER-SE>                                    (28,882)
<TOTAL-LIABILITY-AND-EQUITY>                   107,596
<SALES>                                         59,526
<TOTAL-REVENUES>                                59,526
<CGS>                                           34,258
<TOTAL-COSTS>                                   56,091
<OTHER-EXPENSES>                                   638
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               1,015
<INCOME-PRETAX>                                  6,518
<INCOME-TAX>                                       231
<INCOME-CONTINUING>                              6,287
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     6,287
<EPS-PRIMARY>                                     0.72
<EPS-DILUTED>                                     0.71