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- Watchdog_timer abstract "A watchdog timer (WDT; sometimes called a computer operating properly or COP timer, or simply a watchdog) is an electronic timer that is used to detect and recover from computer malfunctions. During normal operation, the computer regularly restarts the watchdog timer to prevent it from elapsing, or "timing out". If, due to a hardware fault or program error, the computer fails to restart the watchdog, the timer will elapse and generate a timeout signal. The timeout signal is used to initiate corrective action or actions. The corrective actions typically include placing the computer system in a safe state and restoring normal system operation.Watchdog timers are commonly found in embedded systems and other computer-controlled equipment where humans cannot easily access the equipment or would be unable to react to faults in a timely manner. In such systems, the computer cannot depend on a human to reboot it if it hangs; it must be self-reliant. For example, remote embedded systems such as space probes are not physically accessible to human operators; these could become permanently disabled if they were unable to autonomously recover from faults. A watchdog timer is usually employed in cases like these. Watchdog timers may also be used when running untrusted code in a sandbox, to limit the CPU time available to the code and thus prevent some types of denial-of-service attacks.".
- Watchdog_timer thumbnail NASA_Mars_Rover.jpg?width=300.
- Watchdog_timer wikiPageExternalLink watchdogs.htm.
- Watchdog_timer wikiPageID "862179".
- Watchdog_timer wikiPageRevisionID "598779586".
- Watchdog_timer hasPhotoCollection Watchdog_timer.
- Watchdog_timer subject Category:Embedded_systems.
- Watchdog_timer type Artifact100021939.
- Watchdog_timer type EmbeddedSystems.
- Watchdog_timer type Instrumentality103575240.
- Watchdog_timer type Object100002684.
- Watchdog_timer type PhysicalEntity100001930.
- Watchdog_timer type System104377057.
- Watchdog_timer type Whole100003553.
- Watchdog_timer comment "A watchdog timer (WDT; sometimes called a computer operating properly or COP timer, or simply a watchdog) is an electronic timer that is used to detect and recover from computer malfunctions. During normal operation, the computer regularly restarts the watchdog timer to prevent it from elapsing, or "timing out". If, due to a hardware fault or program error, the computer fails to restart the watchdog, the timer will elapse and generate a timeout signal.".
- Watchdog_timer label "Chien de garde (informatique)".
- Watchdog_timer label "Perro guardián (electrónica)".
- Watchdog_timer label "Watchdog timer".
- Watchdog_timer label "Watchdog timer".
- Watchdog_timer label "Watchdog".
- Watchdog_timer label "Watchdog".
- Watchdog_timer label "Watchdog".
- Watchdog_timer label "Сторожевой таймер".
- Watchdog_timer label "ウォッチドッグタイマー".
- Watchdog_timer label "看門狗計時器".
- Watchdog_timer sameAs Watchdog_timer.
- Watchdog_timer sameAs Watchdog.
- Watchdog_timer sameAs Perro_guardián_(electrónica).
- Watchdog_timer sameAs Chien_de_garde_(informatique).
- Watchdog_timer sameAs Watchdog.
- Watchdog_timer sameAs ウォッチドッグタイマー.
- Watchdog_timer sameAs 워치독_타이머.
- Watchdog_timer sameAs Watchdog.
- Watchdog_timer sameAs Watchdog_timer.
- Watchdog_timer sameAs m.03jb73.
- Watchdog_timer sameAs Q1334191.
- Watchdog_timer sameAs Q1334191.
- Watchdog_timer sameAs Watchdog_timer.
- Watchdog_timer wasDerivedFrom Watchdog_timer?oldid=598779586.
- Watchdog_timer depiction NASA_Mars_Rover.jpg.
- Watchdog_timer isPrimaryTopicOf Watchdog_timer.
