<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM (A) THE
CONSOLIDATED BALANCE SHEET AND CONSOLIDATED STATEMENT OF INCOME INCLUDED IN THE
COMPANY'S FORM 10-Q FOR THE PERIOD ENDING SEPTEMBER 30, 1996 AND IS QUALIFIED IN
ITS ENTIRETY BY REFERENCE TO SUCH (B) FINANCIAL STATEMENTS.

</LEGEND>
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS
       
                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-START>                             JAN-01-1996
<PERIOD-END>                               SEP-30-1996
<EXCHANGE-RATE>                                      1
<CASH>                                          31,165
<SECURITIES>                                    76,027
<RECEIVABLES>                                   48,274
<ALLOWANCES>                                       825
<INVENTORY>                                     15,541
<CURRENT-ASSETS>                               179,512
<PP&E>                                          88,947
<DEPRECIATION>                                  40,930
<TOTAL-ASSETS>                                 260,545
<CURRENT-LIABILITIES>                           57,394
<BONDS>                                         59,500
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        67,468
<OTHER-SE>                                      76,183
<TOTAL-LIABILITY-AND-EQUITY>                   260,545
<SALES>                                        163,669
<TOTAL-REVENUES>                               218,251
<CGS>                                           54,665
<TOTAL-COSTS>                                   94,277
<OTHER-EXPENSES>                                83,050
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               2,576
<INCOME-PRETAX>                                 41,950
<INCOME-TAX>                                    15,521
<INCOME-CONTINUING>                             26,429
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    26,429
<EPS-PRIMARY>                                     1.15
<EPS-DILUTED>                                     1.06