<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
FINANCIAL STATEMENTS OF BLUE WAVE SYSTEMS AS OF JUNE 30, 2000 AND FOR THE YEAR
THEN ENDED AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL
STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> JUN-30-2000
<PERIOD-START> JUL-01-1999
<PERIOD-END> JUN-30-2000
<CASH> 6,611
<SECURITIES> 0
<RECEIVABLES> 8,753
<ALLOWANCES> 137
<INVENTORY> 6,231
<CURRENT-ASSETS> 22,664
<PP&E> 10,000
<DEPRECIATION> 7,398
<TOTAL-ASSETS> 26,868
<CURRENT-LIABILITIES> 6,974
<BONDS> 0
0
0
<COMMON> 162
<OTHER-SE> 18,410
<TOTAL-LIABILITY-AND-EQUITY> 26,868
<SALES> 34,828
<TOTAL-REVENUES> 34,828
<CGS> 15,791
<TOTAL-COSTS> 15,791
<OTHER-EXPENSES> 15,947
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 77
<INCOME-PRETAX> 3,154
<INCOME-TAX> 317
<INCOME-CONTINUING> 2,837
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 2,837
<EPS-BASIC> 0.19
<EPS-DILUTED> 0.18
</TABLE>