1. n 1. [techspeak] The master oscillator that
steps a CPU or other digital circuit through its paces. This has
nothing to do with the time of day, although the software counter
that keeps track of the latter may be derived from the
former. 2. vt. To run a CPU or other digital circuit at a
particular rate. "If you clock it at 100MHz, it gets warm.". See
overclock. 3. vt. To force a digital circuit from one
state to the next by applying a single clock pulse. "The data must
be stable 10ns before you clock the latch."