What is the difference between edge-triggering and level-triggering?

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RRB JE ECE 22 Apr 2025 Shift 2 CBT 2 Official Paper

Edge-triggering responds to the transition of the clock, while level-triggering responds to the level of the clock.
Edge-triggering requires more power than level-triggering.
Edge-triggering is faster than level-triggering.
Edge-triggering responds to the level of the input, while level-triggering responds to the transition.

Answer 1

The correct answer is: 1) Edge-triggering responds to the transition of the clock, while level-triggering responds to the level of the clock.

Triggering methods of flip-flop:

1.) Edge Triggering:

In a sequential circuit, if the output changes when the signal transits from a high level to a low level or from a low level to a high level, we call it edge triggering.
Here, the edge that changes the voltage from the low level to the high level is called the positive edge.
And, the edge that changes the voltage from the high level to the low level is called the negative edge.

F2 Madhuri Engineering 30.05.2022 D16

2.) Level Triggering:

In the sequential circuit, if the output changes during the high voltage period or low voltage period, it is called level triggering.
The output of the circuit is high for a positive level and low for a negative level.

F2 Madhuri Engineering 30.05.2022 D17