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In computers, an undesired circuit through a series-parallel configuration
A sneak circuit is an unexpected path or logic flow within a system which, under certain conditions, can initiate an undesired function or inhibit a desired function. The path may consist of hardware, software, operator actions, or combinations of these elements. Sneak circuits are not the result of hardware failure but are latent conditions, inadvertently designed into the system, coded into the software program, or triggered by human error.
Four categories of sneak circuits are:
1. Sneak Paths - Unexpected paths along which current, energy, or logical sequence flows in an unintended direction.
2. Sneak Timing - Events occurring in an unexpected or conflicting sequence.
3. Sneak Indications - Ambiguous or false displays of system operating conditions that may cause the system or an operator to take an undesired action.
4. Sneak Labels - Incorrect or imprecise labeling of system functions - e.g., system inputs, controls, display buses - that may cause an operator to apply an incorrect stimulus to the system.