A system clock, often known as a system timer, is a constant pulse that assists the
computer clock in keeping time. It keeps track of how many seconds have passed since the epoch and utilises that information to determine the current date and time.
The following are some of the system clock's characteristics:
A system clock is used to generate a certain pulse at a predetermined pace.
A system's machine cycle can be completed in one or more clock pulses.
A single software instruction for the CPU could be many instructions.
The instruction set of any central processing unit is a preset set of instructions. These are the commands it can process and comprehend.