An eight-digit led display is multiplexed with each digit, Computer Engineering

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An eight-digit led display is multiplexed with each digit

Question: An eight-digit LED display is multiplexed, with each digit being refreshed at 100 Hz, by an intenupt service routine. The 1SR changes the display to the next digit and requires 8 ps to refresh each digit.

a. if the interrupt service routine is started by an interrupt from the timer system, what interrupt rate would allow us to refresh each digit in the display at 100 Hz?

b. What percentage of the processors time is spent refreshing the eight-digit display (EDD)?

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Computer Engineering: An eight-digit led display is multiplexed with each digit

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Computer Engineering: An eight-digit led display is multiplexed with each digit

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