<ARTICLE>           5
<LEGEND>            This schedule contains summary financial information
                    extracted from Form 10-Q for the six months ended
                    December 31, 1997, and is qualified in its entirety by
                    reference to such financial statements.
<MULTIPLIER>        1,000
<PERIOD-TYPE>                        6-MOS
<FISCAL-YEAR-END>              JUN-30-1998
<PERIOD-END>                   DEC-31-1997
<CASH>                               4,698
<SECURITIES>                        34,745
<RECEIVABLES>                       31,468
<ALLOWANCES>                         2,670
<INVENTORY>                         13,335
<CURRENT-ASSETS>                    54,296
<PP&E>                               9,101
<DEPRECIATION>                       4,568
<TOTAL-ASSETS>                      88,787
<CURRENT-LIABILITIES>               13,801
<BONDS>                                  0
<COMMON>                                88
<PREFERRED-MANDATORY>                    0
<PREFERRED>                              0
<OTHER-SE>                          74,898
<TOTAL-LIABILITY-AND-EQUITY>        88,787
<SALES>                             40,098
<TOTAL-REVENUES>                    40,098
<CGS>                               18,278
<TOTAL-COSTS>                       33,177
<OTHER-EXPENSES>                       839
<LOSS-PROVISION>                         0
<INTEREST-EXPENSE>                       0
<INCOME-PRETAX>                      7,038
<INCOME-TAX>                         2,296
<INCOME-CONTINUING>                  4,742
<DISCONTINUED>                           0
<EXTRAORDINARY>                          0
<CHANGES>                                0
<NET-INCOME>                         4,742
<EPS-PRIMARY>                          .54
<EPS-DILUTED>                          .52