1 EXHIBIT 11.1 COMPUTATION OF PER SHARE EARNINGS For the Six Months Ended March 31, 1998 ADVANCED COMMUNICATION SYSTEMS, INC. (IN THOUSANDS, EXCEPT PER SHARE DATA) Basic: Total basic weighted average shares outstanding ........ 6,438 ====== Net income ............................................. $1,497 ====== Net income per share - basic ........................... $0.23 ====== Diluted: Total basic weighted average shares outstanding ........ 6,438 Plus dilutive stock options ............................ 120 ------ Total diluted average shares ........................... 6,558 ====== Net income per share - diluted ......................... $0.23 ======