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Unformatted text preview: to the base resistor. A push button is connected to RA1. Write an assembly program using call-retlw instructions that displays the pattern, “ HELLO ” whenever the pushbutton is pressed. There should be a delay of 1 sec between the display of each letter. Assume that the MCU is running by a 4MHz external crystal....
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This note was uploaded on 01/20/2011 for the course EE 331 taught by Professor Wahid during the Fall '10 term at University of Saskatchewan- Management Area.
- Fall '10