A negative edge is the exact moment a digital signal drops from a logical high state to a logical low state. Also known as the falling edge, this transition is a fundamental timing reference in synchronous logic. Clock signals use this steep voltage drop to trigger state changes in flip-flops and registers.
Heard on the job
The counter increments on the negative edge of the clock pulse.
Also heard as
- falling edge
Related terms
Positive edge
The exact moment a digital signal transitions from a low voltage state to a high voltage state.
Negative-edge-triggered
A negative-edge-triggered device updates its output only when the clock signal transitions from high to low.
Clock
A continuous square wave signal that synchronizes the timing of digital circuits.
Flip-flop
A bistable logic circuit that stores a single bit of binary data.