In
electronics, a signal edge is a transition of a
digital signal
A digital signal is a signal that represents data as a sequence of discrete values; at any given time it can only take on, at most, one of a finite number of values. This contrasts with an analog signal, which represents continuous values; at ...
from low to high or from high to low:
* A rising edge (or positive edge) is the low-to-high transition.
* A falling edge (or negative edge) is the high-to-low transition.
In the case of a
pulse, which consists of two edges:
* The leading edge (or front edge) is the first edge of the pulse.
* The trailing edge (or back edge) is the second edge of the pulse.
See also
*
Flip-flop (electronics), an edge-triggered circuit
*
Rise time, for a signal transition
References
Digital electronics
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