Question:-
In the sequential circuit shown below, if the initial value of the output Q1Q0 is 00, what are the next four values of Q1Q0?

Option (A)
11,10,01,00
Option (B)
10,11,01,00
Option(C)
10,00,01,11
Option(D)
11,10,00,01
Correct Option:
(A)
Question Solution:
Initially

Here T is T – flip flop

If T = 0 the next state is equal to present state

When T = 1 the next state is compliment of present state.

For both flip flops the T input is ‘1’ (constant) the O|P ‘Q0’ is given as a clock to the next T – flip flop.

Initially Both will be complimented It will become 11,

Next second Q1 remains 1 since the Q0 became ‘0’ when T i/p is 1, so when clock is not present it remains in same state,…

So it will go for sequence 11, 10, 01, 00
question-answer-faq-2236