Exhibit 11 General DataComm Industries, Inc. and Subsidiaries Calculation of Earnings per Share (In thousands except per share data) Three months ended Six months ended March 31, March 31, 1996 1995 1996 1995 - ------------------------------------------------------------------------------ Primary earnings per share: - -------------------------- Weighted average number of common shares outstanding 20,676 20,176 20,586 19,176 Assumed exercise of certain stock options - - - - - ------------------------------------------------------------------------------ 20,676 20,176 20,586 19,176 - ------------------------------------------------------------------------------ Net loss ($1,656) ($5,033) ($4,547)($5,838) - ------------------------------------------------------------------------------ Loss per share ($0.08) ($0.25) ($0.22) ($0.30) - ------------------------------------------------------------------------------ Fully diluted earnings per share: - -------------------------------- Weighted average number of common shares outstanding 20,676 20,176 20,586 19,176 Assumed exercise of certain stock options - - - - - ------------------------------------------------------------------------------ 20,676 20,176 20,586 19,176 - ------------------------------------------------------------------------------ Net loss ($1,656) ($5,033) ($4,547) ($5,838) - ------------------------------------------------------------------------------- Loss per share ($0.08) ($0.25) ($0.22) ($0.30) - ------------------------------------------------------------------------------- -16-