<ARTICLE> 5 <PERIOD-TYPE> 3-MOS 3-MOS <FISCAL-YEAR-END> JUN-30-1998 JUN-30-1997 <PERIOD-START> JUL-01-1997 JUL-01-1996 <PERIOD-END> SEP-30-1997 SEP-30-1996 <CASH> 20,347,212 71,007,592 <SECURITIES> 0 0 <RECEIVABLES> 42,914,602 25,604,223 <ALLOWANCES> 3,966,000 1,250,000 <INVENTORY> 31,776,539 20,320,188 <CURRENT-ASSETS> 99,644,226 121,698,131 <PP&E> 59,909,781 42,728,685 <DEPRECIATION> 26,378,049 20,219,901 <TOTAL-ASSETS> 191,312,904 149,709,420 <CURRENT-LIABILITIES> 25,595,772 18,132,397 <BONDS> 0 0 <PREFERRED-MANDATORY> 0 0 <PREFERRED> 0 0 <COMMON> 197,821 193,125 <OTHER-SE> 147,045,765 125,850,762 <TOTAL-LIABILITY-AND-EQUITY> 191,312,904 149,709,420 <SALES> 51,917,509 34,112,412 <TOTAL-REVENUES> 51,917,509 34,112,412 <CGS> 23,516,840 15,043,248 <TOTAL-COSTS> 23,516,840 15,043,248 <OTHER-EXPENSES> 18,989,337 11,720,903 <LOSS-PROVISION> 0 0 <INTEREST-EXPENSE> 242,724 47,480 <INCOME-PRETAX> 9,168,608 7,300,781 <INCOME-TAX> 3,667,443 2,847,305 <INCOME-CONTINUING> 0 0 <DISCONTINUED> 0 0 <EXTRAORDINARY> 0 0 <CHANGES> 0 0 <NET-INCOME> 5,501,165 4,453,476 <EPS-PRIMARY> 0.27 0.22 <EPS-DILUTED> 0.27 0.22