The internal heartbeat of a computer, also known as "clock rate." The clock circuit uses fixed vibrations generated from a quartz crystal to deliver a steady stream of pulses to the CPU.

Knowing the CPU speed can help you understand performance and decide if an upgrade is needed This article explains how to ...

That simply wouldn’t do, so he initially tried to put together a variation of the clock circuit that [Paul Law] used in his gorgeous relay computer. In the end he couldn’t quite get it working ...