<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> 3-MOS <FISCAL-YEAR-END> SEP-30-1998 <PERIOD-START> OCT-01-1997 <PERIOD-END> DEC-31-1997 <CASH> 141,078 <SECURITIES> 10,231 <RECEIVABLES> 24,768 <ALLOWANCES> 1,000 <INVENTORY> 12,591 <CURRENT-ASSETS> 204,399 <PP&E> 73,645 <DEPRECIATION> 30,042 <TOTAL-ASSETS> 306,852 <CURRENT-LIABILITIES> 30,962 <BONDS> 109 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 277,828 <OTHER-SE> (2,047) <TOTAL-LIABILITY-AND-EQUITY> 306,852 <SALES> 34,701 <TOTAL-REVENUES> 34,701 <CGS> 14,194 <TOTAL-COSTS> 24,011 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 10 <INCOME-PRETAX> 12,973 <INCOME-TAX> 2,594 <INCOME-CONTINUING> 10,379 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 10,379 <EPS-PRIMARY> 0.29 <EPS-DILUTED> 0.27