Polling (computer science)
Process of device status sampling / From Wikipedia, the free encyclopedia
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This article is about the computer science term. For the mathematical model, see Polling system. For other uses, see Polling (disambiguation).
Polling, or interrogation, refers to actively sampling the status of an external device by a client program as a synchronous activity. Polling is most often used in terms of input/output (I/O), and is also referred to as polled I/O or software-driven I/O. A good example of hardware implementation is a watchdog timer.
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