<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from 1996 and
1997 Financial Statements and is qualified in its entirety by reference to such
Financial Statements.
</LEGEND>
<MULTIPLIER> 1000
       
                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               SEP-30-1997
<CASH>                                          23,093
<SECURITIES>                                    29,426
<RECEIVABLES>                                   35,584
<ALLOWANCES>                                         0
<INVENTORY>                                     32,287
<CURRENT-ASSETS>                               131,058
<PP&E>                                          17,711
<DEPRECIATION>                                  12,344
<TOTAL-ASSETS>                                 151,225
<CURRENT-LIABILITIES>                           34,207
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                         9,492
<OTHER-SE>                                     106,387
<TOTAL-LIABILITY-AND-EQUITY>                   151,225
<SALES>                                        132,173
<TOTAL-REVENUES>                               132,173
<CGS>                                           74,532
<TOTAL-COSTS>                                   74,532
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                 31,867
<INCOME-TAX>                                    11,700
<INCOME-CONTINUING>                             20,167
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    20,167
<EPS-PRIMARY>                                     2.03
<EPS-DILUTED>                                        0