Last Updated :
19 Nov, 2018
In the sequential circuit shown below,if the initial value of the output Q1Q0 is 00,what are the next four values of Q1Q0?
(A) 11, 10, 01, 00
(B) 10, 11, 01, 00
(C) 10, 00, 01, 11
(D) 11, 10, 00, 01
Answer: (A)
Explanation: We have t flip flop
Truth table of t flip flop
So q0 always inverted as t=1 always
So 1)q10=1
2)q0 =0
3)q0 =1
4)q0 =1
For q1 also t=1 always but clock is so we have to observe positive edge of clock I.e. when is q0 going from 0 -> 1
1)q1 =1
2)q1 =1
3)q1 =0
4)q1 =0
So final combination q0q1->(11,10,01,00) Ans (A)
Quiz of this Question
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