The output of a T-type flip-flop with T=) will simply toggle every time it is docked. So the circuit in Fig. 7.1 constructed from negative edge triggered T-type flip-flops will give the waveforms show...

Counters are one of the most widely used logic components in digital electronic circuits. In addition to simply counting they can be used: to measure time and frequency; increment memory addresses; an...

Flip-flops' are vital ingredients in all except purely combinational logic circuits and are therefore extremely important. The SR (Set-Reset) flip-flop was introduced in the last chapter and illustrat...

All mechanical switches will ‘bounce’ when closed which means the contacts do not make immediate firm contact. The consequence of this is that the actual voltage from the switch oscillates when contac...

The ‘memory’ of previous outputs in an asynchronous sequential circuit is provided by direct feedback from the internal output(s), Y, to the internal input(s), of the combinational logic block (see Fi...

In this introductory text we will define two broad classes of sequential circuits, namely; asynchronous and synchronous.• The timing of the operation of asynchronous circuits, as the name implies, is ...

All of the circuits so far considered in this book have been combinational. This means that their outputs are dependent only upon the inputs at that time. We now turn our attention to sequential logic...

Heuristic implementations can broadly be considered as those that are not produced by rigorous application of Boolean logic theory. (Remember that any truth table can» in theory, be implemented in fun...