<ARTICLE> 5 <PERIOD-TYPE> 3-MOS <FISCAL-YEAR-END> MAR-31-1998 <PERIOD-START> JUL-01-1997 <PERIOD-END> SEP-30-1997 <CASH> 19,846 <SECURITIES> 66,653 <RECEIVABLES> 8,903 <ALLOWANCES> 1,194 <INVENTORY> 359 <CURRENT-ASSETS> 105,443 <PP&E> 57,121 <DEPRECIATION> 17,579 <TOTAL-ASSETS> 154,762 <CURRENT-LIABILITIES> 21,525 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 38 <OTHER-SE> 133,035 <TOTAL-LIABILITY-AND-EQUITY> 154,762 <SALES> 29,166 <TOTAL-REVENUES> 29,166 <CGS> 5,307 <TOTAL-COSTS> 5,307 <OTHER-EXPENSES> 24,556 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> 454 <INCOME-TAX> 141 <INCOME-CONTINUING> 313 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 313 <EPS-PRIMARY> 0.01 <EPS-DILUTED> 0.01