Multiple choice

How many flip flop are required for mod 10 counter?

  1. 2

  2. 5

  3. 4

  4. 3
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A mod-10 counter requires 4 flip flops because the number of states is 10 (0 to 9). With n flip flops, we can represent 2^n states. For 2^3=8 < 10 < 2^4=16, we need 4 flip flops to accommodate 10 states, though 6 states will be unused.

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