<TABLE> <S> <C>
<ARTICLE> 5
<LEGEND>
Exhibit 27.1
CASTELLE AND SUBSIDIARIES
FINANCIAL DATA SCHEDULE
This schedule contains summary financial information extracted from the
Company's Financial Statements for the three month period ending September 29,
2000 included in the Company's Form 10-Q filed November 14, 2000 and is
qualified in its entirety by reference to such statements.
</LEGEND>
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 3-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-END> SEP-29-2000
<CASH> 4,608
<SECURITIES> 0
<RECEIVABLES> 2,046
<ALLOWANCES> (178)
<INVENTORY> 1,434
<CURRENT-ASSETS> 8,286
<PP&E> 261
<DEPRECIATION> (1,343)
<TOTAL-ASSETS> 8,662
<CURRENT-LIABILITIES> 3,957
<BONDS> 0
0
0
<COMMON> 28,999
<OTHER-SE> (24,294)
<TOTAL-LIABILITY-AND-EQUITY> 8,662
<SALES> 3,072
<TOTAL-REVENUES> 3,072
<CGS> 1,090
<TOTAL-COSTS> 1,090
<OTHER-EXPENSES> 2,192
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 17
<INCOME-PRETAX> 241
<INCOME-TAX> 0
<INCOME-CONTINUING> 241
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 241
<EPS-BASIC> 0.05
<EPS-DILUTED> 0.05
</TABLE>