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<TABLE> <S> <C>
<ARTICLE> 5
<MULTIPLIER> 1000
<S> <C> <C>
<PERIOD-TYPE> 9-MOS 9-MOS
<FISCAL-YEAR-END> Dec-31-1999 Dec-31-1998
<PERIOD-END> Sep-30-2000 Sep-30-1999
<CASH> 31006 26229
<SECURITIES> 115994 60597
<RECEIVABLES> 61454<F1> 38164<F1>
<ALLOWANCES> 0 0
<INVENTORY> 34540 20966
<CURRENT-ASSETS> 262492 152936
<PP&E> 69495<F2> 55724<F2>
<DEPRECIATION> 0 0
<TOTAL-ASSETS> 341518 217670
<CURRENT-LIABILITIES> 54331 39634
<BONDS> 2000 2500
0 0
0 0
<COMMON> 302 281
<OTHER-SE> 274044 163653
<TOTAL-LIABILITY-AND-EQUITY>341518 217670
<SALES> 213118 143142
<TOTAL-REVENUES> 213118 143142
<CGS> 99892 67848
<TOTAL-COSTS> 99892 67848
<OTHER-EXPENSES> 20570<F3> 13513<F3>
<LOSS-PROVISION> 0 0
<INTEREST-EXPENSE> 981 1120
<INCOME-PRETAX> 53301 12909
<INCOME-TAX> 20244 5754
<INCOME-CONTINUING> 0 0
<DISCONTINUED> 0 0
<EXTRAORDINARY> 0 0
<CHANGES> 0 0
<NET-INCOME> 33057 7155
<EPS-BASIC> 1.18 .27
<EPS-DILUTED> 1.09 .25
<FN>
<F1>Net of allowance for doubtful accounts, consistent with balance sheet
presentation. <F2>Net of accumulated depreciation, consistent with balance sheet
presentation.
<F3>Research and development expenses
</FN>
</TABLE>
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