Question

A microprocessor is clocked at a rate of 5 GHz. a. How long is a clock cycle? b. What is the duration of a particular type of machine instruction consisting of three clock cycles?

Answer 1

Frequency = 5GHz

Frequency means no of revolution per second..

In 1 second it makes 5*10^{9} rotation.

Cycle time is time to complete  1 rotation..

5*10^{9} rotation in 1 second

1 Rotation takes 1/(5*10^{9} seconds = 0.20 nano second