<ARTICLE> 5
<LEGEND> THE SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION
EXTRACTED FROM THE CONSOLIDATED FINANCIAL STATEMENTS FOR
THE QUARTERS ENDED SEPTEMBER 30, 1997 AND DECEMBER 31,
1997 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER>1000
<FISCAL-YEAR-END> JUN-30-1998 JUN-30-1998
<PERIOD-START> JUL-01-1997 JUL-01-1997
<PERIOD-END> SEP-30-1997 DEC-31-1997
<PERIOD-TYPE> 3-MOS 6-MOS
<CASH> 32,470 30,308
<SECURITIES> 50,527 54,564
<RECEIVABLES> 25,724 25,395
<ALLOWANCES> 880 332
<INVENTORY> 19,224 19,180
<CURRENT-ASSETS> 140,855 142,760
<PP&E> 46,649 54,267
<DEPRECIATION> 13,132 14,271
<TOTAL-ASSETS> 187,006 195,090
<CURRENT-LIABILITIES> 21,447 25,060
<BONDS> 0 0
<PREFERRED-MANDATORY> 0 0
<PREFERRED> 0 0
<COMMON> 34 35
<OTHER-SE> 162,931 167,352
<TOTAL-LIABILITY-AND-EQUITY> 187,006 195,090
<SALES> 38,473 81,407
<TOTAL-REVENUES> 38,473 81,407
<CGS> 19,954 42,102
<TOTAL-COSTS> 19,954 42,102
<OTHER-EXPENSES> 9,664 26,568
<LOSS-PROVISION> 0 0
<INTEREST-EXPENSE> 0 0
<INCOME-PRETAX> 9,617 14,259
<INCOME-TAX> 3,414 7,393
<INCOME-CONTINUING> 6,203 6,866
<DISCONTINUED> 0 0
<EXTRAORDINARY> 0 0
<CHANGES> 0 0
<NET-INCOME> 6,203 6,866
<EPS-PRIMARY> $0.18 $0.20
<EPS-DILUTED> $0.17 $0.19