UGC-NET | UGC NET CS 2015 Jun – III | Question 6

The number of flip-flops required to design a modulo – 272 counter is:

(A)

8

(B)

9

(C)

27

(D)

11

Answer: (B)

Explanation:

With n flip – flops we can design upto Modulo 2ⁿ counter. 272 is greater than 256 i.e. 2⁸ so we need little bit more; 2⁹ = 512 which is greater than 272. So 9 flip – flops are sufficient to design Modulo 272 counter. Option (B) is correct.

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