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GATE CSE 2011 | Question: 15

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The minimum number of $\text{D}$ flip-flops needed to design a mod-258 counter is

  1. 9
  2. 8
  3. 512
  4. 258
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6 Answers

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An n-bit binary counter consists of n flip-flops and can count in binary from 0 to 2^n-1

2^n ≥ 258
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