<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY INFORMATION EXTRACTED FROM THE UNAUDITED INTERIM
FINANCIAL STATEMENTS AS OF AND FOR THE THREE AND NINE MONTH PERIODS ENDED
FEBRUARY 28, 1998.
</LEGEND>
       
                                                  
<PERIOD-TYPE>                   9-MOS                   3-MOS
<FISCAL-YEAR-END>                          MAY-31-1998             MAY-31-1998
<PERIOD-START>                             JUN-01-1997             DEC-01-1997
<PERIOD-END>                               FEB-28-1998             FEB-28-1998
<CASH>                                         544,964                       0
<SECURITIES>                                         0                       0
<RECEIVABLES>                                  301,984                       0
<ALLOWANCES>                                         0                       0
<INVENTORY>                                    410,272                       0
<CURRENT-ASSETS>                             1,282,031                       0
<PP&E>                                         683,434                       0
<DEPRECIATION>                               (664,379)                       0
<TOTAL-ASSETS>                               1,333,926                       0
<CURRENT-LIABILITIES>                          202,586                       0
<BONDS>                                              0                       0
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                     2,383,385                       0
<OTHER-SE>                                 (1,252,045)                       0
<TOTAL-LIABILITY-AND-EQUITY>                 1,333,926                       0
<SALES>                                      1,303,892                 478,739
<TOTAL-REVENUES>                             1,425,535                 587,474
<CGS>                                          732,492                 269,775
<TOTAL-COSTS>                                1,347,303                 454,072
<OTHER-EXPENSES>                                     0                       0
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                                   0                       0
<INCOME-PRETAX>                                 78,232                 133,402
<INCOME-TAX>                                       800                       0
<INCOME-CONTINUING>                             77,432                 133,402
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                    77,432                 133,402
<EPS-PRIMARY>                                      .05                     .09
<EPS-DILUTED>                                      .05                     .09