Clocks (also called timers) are essential to the operation of any multiprogramme

Question

Clocks (also called timers) are essential to the operation of any multiprogrammed system. They maintain the time of day, and prevent one process from monopolizing the CPU. How are clocks implemented?

a)

Which of the following statements is incorrect in relation to power management?

when a piece of quartz crystal is properly cut and mounted, it can be made to generate a periodic signal of very great accuracy; using electronics this base signal can be multiplied by a small integer to provide synchronizing signal and to cause CPU interrupts

Explanation / Answer

The clock or the timer in mechanical or electromechanic device greatly differs from the system timer

the clock is entirely implemented in software including maintaining the time of day, preventing processes from running too long, and accounting for CPU usage.

Which of the following statements is incorrect in relation to power management?

reducing energy consumption can be achieved by reducing the number of transistors on a chip

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