GATE | GATE-CS-2001 | Question 50

Consider the circuit given below with initial state Q0 =1, Q1 = Q2 = 0. The state of the circuit is given by the value 4Q2 + 2Q1 + Q0

GATECS2001Q39

Which one of the following is the correct state sequence of the circuit?
(A) 1,3,4,6,7,5,2
(B) 1,2,5,3,7,6,4
(C) 1,2,7,3,5,6,4
(D) 1,6,5,7,2,3,4


Answer: (B)

Explanation:

Initial value Q0 Q1 Q2 2Q1+4Q2+Q0
clk 1 0 0 1
1 0 1 0 2
2 1 0 1 5
3 1 1 0 3
4 1 1 1 7
5 0 1 1 6
6 0 0 1 4

So ans is (B) part.

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