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Toggle Flip-Flop Tutorial

Toggle Flip-Flop Diagram

This flip-flop toggles (Q changes state) on the negative going edge of the clock pulse.

T acts as an ENABLE / INHIBIT control.

Q will only toggle on the negative edge of the clock pulse, when T is high.

Below is shown a D type flip-flop connected as a toggle type.

On each clock pulse positive going edge, Q will go to the state bar Q was before the clock pulse arrived.

Remember that bar Q is the opposite level to Q.

Therefore Q will toggle.

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