Watchdog
**Watchdog**
What is Watchdog?
A watchdog timer is an electronic timer that is used to detect and recover from computer malfunctions. During normal operation, the computer regularly resets the watchdog timer to prevent it from elapsing, if the computer fails to reset the watchdog timer (due to a software error, hardware fault, or other issue), the timer will elapse and generate a timeout signal. The timeout signal can be used to initiate corrective actions, such as resetting the system or triggering a failover to a backup system. Watchdog timers are commonly used in embedded systems, industrial control systems, and other critical applications where reliability is paramount.
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