An electronics glitch is an undesired transition that occurs before the signal settles to its intended value. In other words, glitch is an electrical pulse of short duration that is usually the result of a fault or design error, particularly in a digital circuit. For example, many electronic components, such as flip-flops, are triggered by a pulse that must not be shorter than a specified minimum duration; otherwise, the component may malfunction. A pulse shorter than the specified minimum is called a glitch. A related concept is the runt pulse, a pulse whose amplitude is smaller than the minimum level specified for correct operation, and a spike, a short pulse similar to a glitch but often caused by ringing or crosstalk. A glitch can occur in the presence of race condition in a poorly designed digital logic circuit.
A computer glitch is the failure of a system, usually containing a computing device, to complete its functions or to perform them properly.
In public declarations, glitch is used to suggest a minor fault which will soon be rectified and is therefore used as a euphemism for a bug, which is a factual statement that a programming fault is to blame for a system failure.
It frequently refers to an error which is not detected at the time it occurs but shows up later in data errors or incorrect human decisions. While the fault is usually attributed to the computer hardware, this is often not the case since hardware failures rarely go undetected. Situations which are frequently called computer glitches are:
- Incorrectly written software (software bug)
- Incorrect instructions given by the operator (operator error) (failure to account for this *possibility might also be considered a software bug)
- Undetected invalid input data (this might also be considered a software bug)
- Undetected communications errors
- Computer viruses
- Computer exploiting (sometimes called "hacking")
- Such glitches could produce problems such as:
Keyboard malfunction Number key failure Screen abnormalities (turned left, right or upside down) Random program malfunctions Abnormal program registering Examples of computer glitches causing disruption include an unexpected shutdown of a water filtration plant in New Canaan, 2010; failures in the Computer Aided Dispatch system used by the police in Austin, resulting in unresponded 911 calls; and an unexpected bit flip causing the Cassini spacecraft to enter "safe mode" in November 2010
Video game glitches
Glitches/bugs are software errors that can cause drastic problems within the code, and typically go unnoticed or unsolved during the production of said software. These errors can be game caused or otherwise exploited until a developer/development team repairs them. Complex software is rarely bug-free or otherwise free from errors upon first release.
Texture/model glitches are a kind of bug or other error that causes any specific model or texture to either become distorted or otherwise to not look as intended by the developers. Bethesda's The Elder Scrolls V: Skyrim is notorious for texture glitches, among many other errors which affect most of their popular titles. Many games that uses rag-doll physics in their character models in the modern era can have this happen to them. Another game that is known for its physical glitches is the Rocky boxing game for the PS2 where the bodies of the boxers are sometimes known to be morphed and distorted beyond recognition.