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A watchdog timer (WDT, or simply a watchdog), sometimes called a computer operating properly timer (COP timer), [1] is an electronic or software timer that is used to detect and recover from computer malfunctions. Watchdog timers are widely used in computers to facilitate automatic correction of temporary hardware faults, and to prevent errant ...
In spacecraft, a Command-Loss Timer (CLT) is a software timer within the command and data system (CDS) which is restarted every time the spacecraft receives a command from Earth. [1] If the CLT times out , it is assumed that the spacecraft's receiver has failed to reliably receive messages and, in response, the CDS will attempt to restore ...
watchdog timers are a special kind of watchdog, as there are also, e.g. challenge-response watchdogs, time-frame watchdogs, etc. watchdog are a special kind of supervisor. in a hardware design a supervisor is a contraption that supervises the functionality of the device and executes a defined procedure when it detects a failure. a superviser ...
The top U.S. cyber watchdog agency issued an emergency directive Friday, mandating that all federal agencies protect themselves against a dangerous vulnerability in a popular software program. The ...
Early speaker from Vega Labs. Cerwin-Vega was founded as Vega Associates [4] (with later name changes to Vega Laboratories and then Cerwin-Vega) by aerospace engineer Eugene J. "Gene" Czerwinski (1927–2010) in 1954, [4] and became noted for producing an 18" speaker capable of producing 130 dB in SPL at 30 Hz, an astonishing level during its time.
The timer may switch equipment on, off, or both, at a preset time or times, after a preset interval, or cyclically. A countdown time switch switches power, usually off, after a preset time. A cyclical timer switches equipment both on and off at preset times over a period, then repeats the cycle; the period is usually 24 hours or 7 days.
In 1972, Signetics originally released the 555 timer in DIP-8 and TO5-8 metal can packages, and the 556 timer was released in a DIP-14 package. [ 4 ] In 2006, the dual 556 timer was available in through-hole packages as DIP-14 (2.54 mm pitch), [ 21 ] and surface-mount packages as SO-14 (1.27 mm pitch) and SSOP-14 (0.65 mm pitch).
Consumer watchdog, consumer protection organizations or campaigners; Charity watchdog, an organization that monitors and rates charities; Government watchdog, organizations and platforms focused on government; see Category:Government oversight and watchdog organizations for examples; Watchdog journalism, a form of investigative journalism