Question

The minimum number of flip-flops required to design a mod-10 counter is:

• A. 3
• B. 4
• C. 5
• D. 10

Hint:

Use \( 2^n \geq \text{MOD} \) to determine flip-flop count for counters.

Answer 1

The Correct Option is B

To count up to 10 states (0–9), we need: \[ 2^n \geq 10 \Rightarrow n = 4\ \text{flip-flops} \]