Exhibit 11.1 INTEGRAL SYSTEMS INC. AND SUBSIDIARIES COMPUTATION OF EARNINGS PER SHARE Three Months Ended December 31, Basic: 1999 1998 ------------ ------------ Weighted average number of common shares 7,203,997 5,857,499 Net income $1,260,111 $ 456,941 Earnings per share $ 0.17 $ 0.08 Diluted: Weighted average number of common shares 7,749,530 6,647,766 Net income $1,260,111 $ 456,941 Earnings per share $ 0.16 $ 0.07