Sequential Circuits: JK Flip-Flop
The JK flip-flop is similar to the SR flip-flop but with the following upgrade: instead of entering an undefined state when both J and K inputs are $1$, the JK flip-flop toggles the output.
With inputs J and K, the flip-flop can be set, reset, or toggle its output, depending on the input state and clock signal. It is highly versatile in digital systems requiring toggle functionality.
JK flip-flop: black-box representation. Figure 3.32.(a) on page 184 of Essentials of Computer Organization and Architecture by Linda Null, 2023.
JK flip-flop: logic gate diagram. Figure 3.32.(c) on page 184 of Essentials of Computer Organization and Architecture by Linda Null, 2023.
These notes by Miriam Briskman are licensed under CC BY-NC 4.0 and based on sources.