Amateur Extra › E7 Practical Circuits › E7A03
E7A03
Which of the following can divide the frequency of a pulse train by 2?
Pick an answer to check it.
Answer: B. A flip-flop
A flip-flop changes state once per input pulse, so it takes two input pulses to complete one output cycle. That divides the frequency by 2.
Tip: One flip-flop = divide by 2.