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GATE | GATE CS Mock 2018 | Set 2 | Question 57

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The next state table of a 2 bit saturating up-counter is given below. \"Gate_8\" The counter is built as synchronous sequential circuit using D flip-flops. The value for D1 and D2 are

(A)

D1 = Q0 + Q1 D2 = Q\’0 + Q1

(B)

D1 = Q\’1Q0 D2 = Q\’1 + Q\’0

(C)

D1 = Q\’0 + Q1 D2 = Q0 + Q1

(D)

None of these



Answer: (A)

Explanation:

Since D = Q, so; \"1\" Using above excitation table, D1 = Q0 + Q1 D2 = Q\’0 + Q1 Option (A) is correct.


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Last Updated : 20 Nov, 2018
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