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GATE | GATE CS 2011 | Question 15

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The minimum number of D flip-flops needed to design a mod-258 counter is.
(A) 9
(B) 8
(C) 512
(D) 258


Answer: (A)

Explanation:

An n-bit binary counter consists of n flip-flops and can count in binary from 0 to 2^n – 1.  (Source: Computer System Architecture by Morris Mano) 

2^n ≥ 258



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Last Updated : 29 Sep, 2021
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