What is Glitch?
An unwanted momentary pulse on an output, caused for example by differing delays along signal paths. In combinational logic it is also called a hazard; in DACs it appears when the code changes.
Field: Logic circuits
Glitch in the explanations
Moore outputs come straight from the state register, so they are glitch-free, stable and predictable, but respond a clock later and often need more states.
Which type of sequential circuit (state machine) has output…When one input change reaches the output along paths with different delays, the output can briefly show a wrong value—a glitch (hazard).
In a combinational circuit, what is the unwanted pulse that…A glitch is a spike-like disturbance in a DAC's output that occurs when several bits switch at once and slight timing differences make wrong intermediate codes appear briefly.
What is the brief spike-like error that appears at the outp…
Questions that mention Glitch (3)
- Which type of sequential circuit (state machine) has outputs determined only by the current state?
- In a combinational circuit, what is the unwanted pulse that appears briefly at the output when an input changes, due to different delays along different paths?
- What is the brief spike-like error that appears at the output of a DA converter at the moment the input code changes?
Related terms
Sequential circuit Combinational circuit Flip-flop Clock skew De Morgan's theorem Decoder Full adder Gray code Hold time Karnaugh map