Question

For each of the positive edge-triggered J-K flip-flop used in the following figure, the propagation delay is $\Delta$T.



Which of the following waveforms correctly represents the output at $Q_1$?

Answer 1

Time period of waveform of output at
$Q_1$ = 2 $\times$ 2 $\times$ T = 4T
Delay time at output
$Q_1$ = 2$\Delta$T
Note:
(i) In case of n flip-flops in such case, time period of last output waveform = $2^{n}T$
Where,
T = Time period for clock pulse
(ii) Delay time = n$\Delta$T
where,
$\Delta$T = Propagation delay provided by one flip-flop