<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED BALANCE SHEET, CONSOLIDATED STATEMENT OF OPERATIONS AND
CONSOLIDATED STATEMENT OF CASH FLOWS INCLUDED IN THE COMPANY'S FORM 10-Q FOR THE
PERIOD ENDING MARCH 31, 1996, 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-01-1996
<PERIOD-END>                               MAR-31-1996
<CASH>                                          19,712
<SECURITIES>                                    15,927
<RECEIVABLES>                                   17,353
<ALLOWANCES>                                     1,840
<INVENTORY>                                      9,284
<CURRENT-ASSETS>                                67,934
<PP&E>                                          28,210
<DEPRECIATION>                                  15,398
<TOTAL-ASSETS>                                  94,919
<CURRENT-LIABILITIES>                           23,106
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                            14
<OTHER-SE>                                      68,836
<TOTAL-LIABILITY-AND-EQUITY>                    94,919
<SALES>                                         23,094
<TOTAL-REVENUES>                                23,094
<CGS>                                            7,131
<TOTAL-COSTS>                                    7,131
<OTHER-EXPENSES>                                12,554
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                 131
<INCOME-PRETAX>                                  3,712
<INCOME-TAX>                                     1,223
<INCOME-CONTINUING>                              2,489
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     2,489
<EPS-PRIMARY>                                     0.17
<EPS-DILUTED>                                     0.17