MICROCHIP TECHNOLOGY INCORPORATED AND SUBSIDIARIES EXHIBIT 11.1 - COMPUTATION OF NET INCOME PER SHARE (in thousands, except per share amounts) Year Ended March 31, 1997 1996 1995 --------------------------- Net income $51,132 $43,752 $36,299 ------- ------- ------- Weighted average shares: Common shares outstanding 51,569 50,750 47,525 Common equivalent shares representing shares issuable upon exercise of stock options(1) 3,114 3,783 4,116 ------- ------- ------- Total weighted average shares primary 54,683 54,533 51,641 ------- ------- ------- Incremental common equivalent shares (calculated using the higher of end of period or average market value)(2) 315 - 384 ------- ------- ------- Total weighted average shares fully diluted 54,998 54,533 52,025 ------- ------- ------- Primary net income per common and common equivalent share 0.94 0.80 0.70 ------- ------- ------- Fully diluted net income per common and common equivalent share 0.93 0.80 0.70 ------- ------- ------- - --------------------------------------------------- (1) Amount calculated using the treasury stock method and fair market values for stock. (2) This calculation is submitted in accordance with regulation S-K Item 601(b)(11) although not required by footnote 2 to paragraph 14 of APB Opinion No. 15 because it results in dilution of less than 3%.