CPU System Clock

In computers, sequence is everything. The system clock synchronizes the tasks in a computer, like loading data before manipulating it, etc. The system clock is a circuit that emits a continuous stream of precise high and low pulses that are all exactly the same length. One clock cycle is the time that passes from the start of one high pulse, until the start of the next. If several events are supposed to happen in one clock cycle, the cycle is subdivided by inserting a circuit with a known delay in it, thus providing more highs and more lows.