EXHIBIT 11 INTERDIGITAL COMMUNICATIONS CORPORATION AND SUBSIDIARIES COMPUTATION OF NET INCOME (LOSS) PER SHARE EARNINGS (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS) FOR THE YEAR COMPUTATION OF PRIMARY ENDED EARNINGS (LOSS) PER SHARE: DECEMBER 31, 1995 - -------------------------- ----------------- Net Income (Loss) Applicable to Common Shareholders $34,340 ======= Weighted Average of Primary Shares: Common Stock 43,925 Assumed Conversion of Options and Warrants 2,578 ------- 46,503 ======= Primary Earnings Per Share $ 0.74 ======= A calculation for the years ended December 31, 1994 and 1996 have not been presented since the effect of the options and warrants would have been anti-dilutive.