Exhibit 11.1 INTEGRAL SYSTEMS INC. AND SUBSIDIARIES COMPUTATION OF EARNINGS PER SHARE Three Months Ended Six Months Ended March 31, March 31, 2002 2001 2002 2001 ---------- ---------- ---------- ---------- Numerator: Net Income $433,599 $788,033 $1,049,704 $1,840,273 Denominator: Denominator for basic earnings per share-weighted-average shares 9,120,763 9,452,318 9,096,980 9,446,718 Effect of dilutive securities: Employee stock options 195,980 156,199 199,903 140,069 Denominator for diluted earnings per share adjusted weighted-average shares and assumed conversions 9,316,743 9,608,517 9,296,883 9,586,787 Basic earnings per share $0.05 $0.08 $0.12 $0.19 Diluted earnings per share $0.05 $0.08 $0.11 $0.19 - 22 -