<ARTICLE> 5 <LEGEND> THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE DECEMBER 31, 1996 FINANCIAL STATEMENTS AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS. </LEGEND> <PERIOD-TYPE> 6-MOS 6-MOS <FISCAL-YEAR-END> JUN-30-1997 JUN-30-1996 <PERIOD-START> JUL-01-1996 JUL-01-1995 <PERIOD-END> DEC-31-1996 DEC-31-1995 <CASH> 12,680,350 9,792,908 <SECURITIES> 0 0 <RECEIVABLES> 37,476,031 25,876,073 <ALLOWANCES> 2,250,000 850,000 <INVENTORY> 28,249,464 17,300,722 <CURRENT-ASSETS> 81,645,068 56,659,267 <PP&E> 66,055,000 38,976,494 <DEPRECIATION> 34,956,803 17,207,404 <TOTAL-ASSETS> 162,306,284 83,951,509 <CURRENT-LIABILITIES> 20,780,919 12,513,289 <BONDS> 0 0 <PREFERRED-MANDATORY> 0 0 <PREFERRED> 0 0 <COMMON> 197,187 168,519 <OTHER-SE> 131,439,071 65,381,549 <TOTAL-LIABILITY-AND-EQUITY> 162,306,284 83,951,509 <SALES> 77,113,720 56,915,794 <TOTAL-REVENUES> 77,113,720 56,915,794 <CGS> 34,585,070 24,895,319 <TOTAL-COSTS> 34,585,070 24,895,319 <OTHER-EXPENSES> 28,279,076 21,422,214 <LOSS-PROVISION> 0 0 <INTEREST-EXPENSE> 197,615 100,595 <INCOME-PRETAX> 15,537,054 11,029,901 <INCOME-TAX> 6,214,822 4,301,661 <INCOME-CONTINUING> 0 0 <DISCONTINUED> 0 0 <EXTRAORDINARY> 0 0 <CHANGES> 0 0 <NET-INCOME> 9,322,232 6,728,240 <EPS-PRIMARY> 0.46 0.38 <EPS-DILUTED> 0.46 0.38