Remember that pulses which are received from clock and applied on a logic circuit, are called clock pulses and the pulse operation is referred to as clocking. As such clock or timer is such a circuit, which provide square or rectangular type periodic waveforms (or provides such a signal), which are used as a basic timing signal in digital circuits. During every clock time bit, waveform is either high or low. However, in certain instances change can also occur in levels on the trailing edge of the clock. a waveform has been synchronized with a leading edge of the clock waveform or clock signal or clock pulse). It has to be inculcated that every time, a change takes place on A waveform level on the leading edge of clock waveform (i.e. This has been demonstrated via clock waveform or clock signal as shown in figure 6.1. Clock is a periodic waveform wherein space or gap between pulses (which is called interval or period) is equal to a time bit.

All waveforms within multiple digital systems are synchronized via a rudimentary timing waveform, which is called clock. significance which heart has in a human body, same is the importance of a clock in any digital system). In fact, clock may be treated as a heart of any digital system, as it provides heartbeat for the system and without which, system virtually gets blocked or stops working (i.e.

In other words, circuit provides such a continuous periodic (containing specific intervals) waveform (normally square or quadratic shaped waveform) which is used to synchronize signals in a digital system, is called clock or timer. Remember that these signals are used in order to synchronize different digital circuits or computer operations. A clock is a circuit, which provides such periodic or definite signals on a logic circuit or digital system, which tends to change its operational mode or condition.

Discrete transistor computer