Sequential Circuits: SR Flip-Flop

The SR (Set-Reset) flip-flop has two inputs: S (Set) and R (Reset).

When S is activated ($1$) and R is deactivated ($0$), the flip-flop sets its output to $1$. When R is activated and S is deactivated, the output resets to $0$. If both inputs are $0$, the output retains its previous state. However, if both inputs are $1$, it creates an undefined or forbidden state.

SR flip-flop: black-box representation.

SR flip-flop: black-box representation. Figure 3.30 on page 182 of Essentials of Computer Organization and Architecture by Linda Null, 2023.

SR flip-flop: logic gate diagram.

SR flip-flop: logic gate diagram. Figure 3.31.(b) on page 182 of Essentials of Computer Organization and Architecture by Linda Null, 2023.