
<TABLE> <S> <C>

<ARTICLE> 5
<MULTIPLIER>    1
       
<S>                             <C>                     <C>
<PERIOD-TYPE>                   3-MOS                   3-MOS
<FISCAL-YEAR-END>                          NOV-30-1998             NOV-30-1997
<PERIOD-END>                               FEB-28-1998             FEB-28-1997
<CASH>                                       2,568,863               3,649,774
<SECURITIES>                                 3,820,691               3,800,688
<RECEIVABLES>                                7,036,727               4,595,598
<ALLOWANCES>                                   720,594                 664,325
<INVENTORY>                                  6,617,428               6,014,672
<CURRENT-ASSETS>                            18,576,825              16,163,889
<PP&E>                                       2,575,891               2,470,524
<DEPRECIATION>                               1,894,851               1,820,855
<TOTAL-ASSETS>                              21,611,951              18,867,759
<CURRENT-LIABILITIES>                        7,501,821               5,139,768
<BONDS>                                              0                       0
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                        72,671                  72,135
<OTHER-SE>                                  14,055,428              13,673,825
<TOTAL-LIABILITY-AND-EQUITY>                21,611,951              18,861,759
<SALES>                                      9,352,431               8,617,289
<TOTAL-REVENUES>                             9,438,685               8,698,517
<CGS>                                        3,587,114               3,076,627
<TOTAL-COSTS>                                8,830,182               8,182,220
<OTHER-EXPENSES>                             5,179,831               5,067,930
<LOSS-PROVISION>                                63,237                  34,834
<INTEREST-EXPENSE>                                   0                   2,829
<INCOME-PRETAX>                                608,503                 516,297
<INCOME-TAX>                                   232,548                 206,296
<INCOME-CONTINUING>                            375,955                 310,001
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                   375,955                 310,001
<EPS-PRIMARY>                                      .05                     .04
<EPS-DILUTED>                                      .05                     .04
        

</TABLE>
