<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
FINANCIAL STATEMENTS OF BLUE WAVE SYSTEMS AS OF SEPTEMBER 30, 2000 AND FOR THE
THREE MONTHS THEN ENDED AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 3-MOS
<FISCAL-YEAR-END> JUN-30-2001
<PERIOD-START> JUL-01-2000
<PERIOD-END> SEP-30-2000
<CASH> 8,369
<SECURITIES> 0
<RECEIVABLES> 5,784
<ALLOWANCES> 115
<INVENTORY> 6,864
<CURRENT-ASSETS> 21,975
<PP&E> 10,027
<DEPRECIATION> 7,560
<TOTAL-ASSETS> 26,061
<CURRENT-LIABILITIES> 7,239
<BONDS> 0
0
0
<COMMON> 163
<OTHER-SE> 17,363
<TOTAL-LIABILITY-AND-EQUITY> 26,061
<SALES> 6,586
<TOTAL-REVENUES> 6,586
<CGS> 3,301
<TOTAL-COSTS> 3,301
<OTHER-EXPENSES> 3,856
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 1
<INCOME-PRETAX> (490)
<INCOME-TAX> 5
<INCOME-CONTINUING> (495)
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> (495)
<EPS-BASIC> (.03)
<EPS-DILUTED> (.03)
</TABLE>