Question

The input frequency of seven cascaded T flip-flops is 512 kHz. What is the time period of the output?

• A. 13.67 μs
• B. 250 μs
• C. 125 μs
• D. 500 μs

Hint:

Each T flip-flop divides frequency by 2. Use \( T = 1/f \).

Answer 1

The Correct Option is B

Each T flip-flop divides frequency by 2. So final frequency = \( 512~kHz / 2^7 = 512 / 128 = 4~kHz \) Time period = \( 1 / 4~kHz = 250~\mu s \)