A clock signal is a non-sinusoidal signal used to coordinate actions of a digital circuit. Such signals

Question:

A clock signal is a non-sinusoidal signal used to coordinate actions of a digital circuit. Such signals oscillate between two levels, high and low, “instantaneously” at regular intervals. The most common clock signal has the form of a square wave and can be approximated by the sum of simple harmonic sinusoidal waves, such as