Question

How many minimum number of flip-flops are required to make a mod-479 counter?

• A. 6
• B. 7
• C. 8
• D. 9

Hint:

For counters, the number of flip-flops is determined by the logarithm of the counter modulus to base 2.

Answer 1

The Correct Option is D

The minimum number of flip-flops required for a mod-N counter is given by: \[ \text{Number of flip-flops} = \lceil \log_2 N \rceil \] For a mod-479 counter: \[ \log_2 479 \approx 8.89 \] Therefore, the minimum number of flip-flops required is 9.