Topic: Digital Electronics
A 1 MHz clock signal is applied to a J-K Flip-Flop with $J=K=1$. What is the frequency of the Flip-Flop output signal?
- A. 2 MHz
- B. 500 kHz
- C. 260 kHz
- D. 500 MHz
Answer: B. 500 kHz
Explanation: When $J=K=1$, the J-K flip-flop acts as a toggle flip-flop. It toggles its state on every active clock edge, which divides the input clock frequency by 2.
$f_{out}=\frac{f_{in}}{2}=\frac{10^{6}}{2}\text{ Hz}=500~\text{kHz}$