<ARTICLE> 5
<MULTIPLIER> 1,000
       
                                                                       
<PERIOD-TYPE>                   3-MOS                   3-MOS                   3-MOS
<FISCAL-YEAR-END>                          JAN-31-1997             JAN-31-1997             JAN-31-1997
<PERIOD-START>                             FEB-01-1996             MAY-01-1996             AUG-01-1996
<PERIOD-END>                               APR-30-1996             JUL-31-1996             OCT-31-1996
<CASH>                                         102,945                 116,803                  87,759
<SECURITIES>                                    71,050                  76,428                  72,842
<RECEIVABLES>                                  113,948                  94,688                  93,382
<ALLOWANCES>                                     6,910                   6,815                   6,998
<INVENTORY>                                      9,900                  10,979                   9,012
<CURRENT-ASSETS>                               342,070                 340,601                 298,874
<PP&E>                                         131,408                 132,441                 124,148
<DEPRECIATION>                                  83,010                  83,704                  75,794
<TOTAL-ASSETS>                                 520,199                 510,765                 477,163
<CURRENT-LIABILITIES>                          143,253                 150,266                 137,600
<BONDS>                                              0                       0                       0
<PREFERRED-MANDATORY>                                0                       0                       0
<PREFERRED>                                          0                       0                       0
<COMMON>                                       149,193                 150,214                 141,472
<OTHER-SE>                                     194,216                 178,193                 102,388
<TOTAL-LIABILITY-AND-EQUITY>                   520,199                 510,765                 477,163
<SALES>                                        136,281                 128,745                 116,647
<TOTAL-REVENUES>                               136,281                 128,745                 116,647
<CGS>                                           17,292                  16,622                  15,220
<TOTAL-COSTS>                                   90,258                  94,574                  93,493
<OTHER-EXPENSES>                                     0                       0                       0
<LOSS-PROVISION>                                   606                     426                     432
<INTEREST-EXPENSE>                                 460                     461                       0
<INCOME-PRETAX>                                 29,551                  18,564                   9,106
<INCOME-TAX>                                    10,491                   7,919                   3,233                  
<INCOME-CONTINUING>                             19,060                  10,645                   5,873
<DISCONTINUED>                                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                    19,060                  10,645                   5,873
<EPS-PRIMARY>                                     0.41                    0.23                    0.13
<EPS-DILUTED>                                     0.39                    0.22                    0.13