<ARTICLE> 5
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1995
<PERIOD-START>                             JAN-01-1995
<PERIOD-END>                               JUN-30-1995
<CASH>                                          31,824
<SECURITIES>                                    68,992
<RECEIVABLES>                                  113,085
<ALLOWANCES>                                     6,793
<INVENTORY>                                     18,831
<CURRENT-ASSETS>                               238,994
<PP&E>                                          85,519
<DEPRECIATION>                                  56,212
<TOTAL-ASSETS>                                 321,980
<CURRENT-LIABILITIES>                           76,320
<BONDS>                                              0
<COMMON>                                        41,432
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<OTHER-SE>                                     172,406
<TOTAL-LIABILITY-AND-EQUITY>                   321,980
<SALES>                                              0
<TOTAL-REVENUES>                               318,004
<CGS>                                                0
<TOTAL-COSTS>                                  160,112
<OTHER-EXPENSES>                               111,265
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                 46,627
<INCOME-TAX>                                    17,718
<INCOME-CONTINUING>                             28,909
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    28,909
<EPS-PRIMARY>                                      .81
<EPS-DILUTED>                                      .81