Question

In the circuit shown, choose the correct timing diagram of the output (Y) from the given waveforms $W_1$, $W_2$, $W_3$ and $W_4$.

Answer 1

CLK $X_1$ $X_2$ Y
0 X X Previous output/ no change
0 0 0 0
0 0 1 0
0 1 0 0
0 1 1 1
So, according to wave form



Solution waveform $W_3$ satisfies it.