What kind of operation occurs in a J – K flip flop when both inputs J and K are equal to 1?

In a J-K flip-flop, when both inputs J and K are equal to 1, a specific operation known as "toggle" occurs. This means that the output state of the flip-flop changes to its opposite state.

Operation Details:

1. Toggle Function: The J-K flip-flop has two inputs, J and K, and one output (Q). When J = 1 and K = 1, the flip-flop will switch its output Q from 0 to 1, or from 1 to 0, effectively toggling the state.

2. Previous State Impact: If the previous state was Q = 0 (i.e., the flip-flop is in a reset state), upon the next clock pulse, Q will become 1. Conversely, if the previous state was Q = 1 (i.e., the flip-flop is in a set state), it changes to Q = 0 on the next clock pulse.

3. Timing Clarity: It is important to note that this toggle operation occurs on the clock edge that triggers the flip-flop (typically the rising edge).

Summary:

Thus, when both inputs of a J-K flip-flop are 1, it results in the output toggling its state, making it a versatile memory element in digital circuits.