Exhibit 11.1 INTEGRAL SYSTEMS INC. AND SUBSIDIARIES COMPUTATION OF EARNINGS PER SHARE Three Months Ended Six Months Ended March 31, March 31, Basic: 2000 1999 2000 1999 ------------- ------------- ------------- ------------- Weighted average number of common shares 7,970,006 5,910,394 7,593,002 5,857,499 Net income $787,438 $828,226 $2,047,551 $1,285,167 Earnings per share $0.10 $0.14 $.27 $.22 Diluted: Weighted average number of common shares 8,508,494 6,283,722 8,112,992 6,289,785 Net income $787,438 $828,226 $2,047,551 $1,285,167 Earnings per share $0.09 $0.13 $.25 $.20