EXHIBIT 11 EVANS & SUTHERLAND COMPUTER CORPORATION EARNINGS PER SHARE CALCULATION Unaudited (In thousands except per share amounts) Three Months Ended Three Months Ended March 27,1998 March 28,1997 -------------------------------- -------------------------------- Basic Diluted Basic Diluted ------------- -------------- -------------- ------------- Average number of common shares outstanding during the period Common shares outstanding during the entire period 9,067 9,067 9,059 9,059 Weighted average common shares issued during the period 12 12 8 8 ------------- -------------- -------------- ------------- Weighted average number of common shares outstanding 9,079 9,079 9,067 9,067 Weighted average number of dilutive common equivalent shares outstanding - 381 - 373 ------------- -------------- -------------- ------------- Weighted average common and dilutive common equivalent shares outstanding 9,079 9,460 9,067 9,440 ============= ============== ============== ============= Net earnings applicable to common stock $1,589 $1,589 $1,411 $1,411 ============= ============== ============== ============= Net earnings per common and dilutive common equivalent share outstanding $0.18 $0.17 $0.16 $0.15 ============= ============== ============== =============