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Software Timer

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By Prathima

 

               Software Timer

What is timer?

Timer is nothing but a kind of clock wont to measure specific time intervals. Timers have large applications altogether the sector . a tool which counts down or Up from specified time intervals is named timer.

Software timer:

Software timer doesn’t have any devices or parts. These timers Exists only in computer or micro controller based devices within the type of code. They calculate on the accuracy of a clock generator usually built into a hardware device that runs the software. This kinds of timers mostly utilized in phones, cooking and baking appliances.

A watchdog timer could also be a computer operating properly or cop timer, software timer is used to detect and obtain over computer malfunctions. During normal operation, the pc regularly resets the watchdog timer to prevent it from elapsing, or "timing out". If, because of a hardware fault or program error, the pc fails to reset the watchdog, the timer will elapse and generate a timeout signal.

The timeout signal is employed to initiate corrective actions. The corrective actions typically include placing the pc system during a safe state and restoring normal system operation. The watchdog timer send reset signal to the processor/micro controller when timeout is reached. supported clock frequency, outing interval will vary. For 16 MHz clock, timeout interval is 92 ms.

 

Watchdog timers are mostly utilized in embedded system and micro controller based equipment. it's also utilized in operating systems where high definite operations are required to finish specific interval . Watchdog timers are essential in remote, automated systems.


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