![]() ![]() ![]() Watchdog timers are widely used in computers to facilitate automatic correction of temporary hardware faults, and to prevent errant or malevolent software from disrupting system operation.ĭuring normal operation, the computer regularly restarts the watchdog timer to prevent it from elapsing, or "timing out". ![]() One pin receives the timer restart ("kick" ) signal from the computer another pin outputs the timeout signal.Ī watchdog timer (sometimes called a computer operating properly or COP timer, or simply a watchdog) is an electronic or software timer that is used to detect and recover from computer malfunctions. A watchdog timer integrated circuit (Texas Instruments TPS3823).
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