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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