EXHIBIT 11 COMPUTER SCIENCES CORPORATION AND SUBSIDIARIES EXHIBIT XI, CALCULATION OF PRIMARY AND FULLY DILUTED EARNINGS PER SHARE YEAR ENDED ---------------------------------------- MARCH 28, MARCH 29, MARCH 31, (DOLLARS IN THOUSANDS) 1997 1996 1995 - ------------------------------------------------------------------------ ------------ ------------ ------------ Net Income.............................................................. $192,413 $109,431 $143,237 ------------ ------------ ------------ ------------ ------------ ------------ Shares Average shares outstanding............................................ 75,947,284 74,432,531 70,148,723 Common stock equivalents.............................................. 2,249,578 2,102,263 1,702,226 ------------ ------------ ------------ Total for primary calculation......................................... 78,196,862 76,534,794 71,850,949 Additional for fully diluted calculation.............................. 3,331 714,176 558,771 ------------ ------------ ------------ Total for fully diluted calculation................................. 78,200,193 77,248,970 72,409,720 ------------ ------------ ------------ ------------ ------------ ------------