<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FOR THE TWELVE
MONTHS ENDED DECEMBER 31, 1996 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO
SUCH FINANCIAL STATEMENTS.
</LEGEND>
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-END>                               DEC-31-1996
<CASH>                                      23,112,000
<SECURITIES>                                 9,008,000
<RECEIVABLES>                               10,696,000
<ALLOWANCES>                                         0
<INVENTORY>                                  8,901,000
<CURRENT-ASSETS>                            53,637,000
<PP&E>                                      50,563,000
<DEPRECIATION>                              21,830,000
<TOTAL-ASSETS>                              86,996,000
<CURRENT-LIABILITIES>                       15,812,000
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                       126,000
<OTHER-SE>                                  70,431,000
<TOTAL-LIABILITY-AND-EQUITY>                86,996,000
<SALES>                                     68,864,000
<TOTAL-REVENUES>                            68,864,000
<CGS>                                       38,887,000
<TOTAL-COSTS>                               38,887,000
<OTHER-EXPENSES>                            20,242,000
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                         (1,368,000)
<INCOME-PRETAX>                             11,103,000
<INCOME-TAX>                                 (888,000)
<INCOME-CONTINUING>                         11,991,000
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                11,991,000
<EPS-PRIMARY>                                      .97
<EPS-DILUTED>                                      .93