a) Suppose a processor scans the connected keyboard every 1000 μs. This system is controlledby an operator through commands entered from the keyboard. The average number of commandsentered in an 10-hour interval is 100. By what fraction would the number of processor visits to thekeyboard be reduced if interrupt-driven I/O were used?

a) Suppose a processor scans the connected keyboard every 1000 μs. This system is controlled
by an operator through commands entered from the keyboard. The average number of commands
entered in an 10-hour interval is 100. By what fraction would the number of processor visits to the
keyboard be reduced if interrupt-driven I/O were used?