A particular system is controlled by an operator through commands entered from a keyboard.The average number of commands entered in an 8-hour interval is 60. Show your work toreceive full credit. a. Suppose the CPU scans the keyboard every 100ms. How many times will the keyboard bechecked in an 8-hour period? b. By what fraction would the number of CPU visits to the keyboard be reduced if interrupt-driven 1/0 were used?

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