Exhibit 11.1 INTEGRAL SYSTEMS, INC. AND SUBSIDIARIES COMPUTATION OF EARNINGS PER SHARE Three Months Ended Twelve Months Ended September 30, September 30, Basic: 2000 1999 1998 2000 1999 1998 --------- --------- --------- --------- --------- --------- Weighted average number of common shares 9,426,068 7,802,991 6,484,184 8,829,182 6,969,090 6,443,433 Income from Continuing Operations $0.08 $0.13 $0.05 $0.42 $0.43 $0.27 Income from Discontinued Operations $0.00 $0.00 $0.01 $0.01 $0.03 $0.04 Income on Disposal of Discontinued Segment $0.04 $0.00 $0.00 $0.04 $0.00 $0.00 --------- --------- --------- --------- --------- --------- Net Income $0.12 $0.13 $0.06 $0.47 $0.46 $0.31 Diluted: Weighted average number of common shares 9,598,615 8,331,158 6,980,166 9,283,546 7,422,601 6,882,933 Income from Continuing Operations $0.08 $0.12 $0.05 $0.40 $0.40 $0.25 Income from Discontinued Operations $0.00 $0.00 $0.01 $0.01 $0.03 $0.04 Income on Disposal of Discontinued Segment $0.04 $0.00 $0.00 $0.04 $0.00 $0.00 --------- --------- --------- --------- --------- --------- Net Income $0.12 $0.12 $0.06 $0.45 $0.43 $0.29 (18)