Co to polling?

[Nipyon]

J.W

Wiem, nie ten dział...

moderatora proszę o przeniesienie, nie wiedziałem do jakiego działu dac ;p

[M4niak]

A przetłumacz sobie z angielskiego na przykład

[mpm112]

Czy tak trudno wpisać w Googlach What is a polling albo Co to polling... Pierwszy wpis:

Polling, or polled operation, in computer science, 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.
Polling is sometimes used synonymously with busy-wait polling (busy waiting). In this situation, when an I/O operation is required the computer does nothing other than check the status of the I/O device until it is ready, at which point the device is accessed. In other words the computer waits until the device is ready. Polling also refers to the situation where a device is repeatedly checked for readiness, and if it is not the computer returns to a different task. Although not as wasteful of CPU cycles as busy-wait, this is generally not as efficient as the alternative to polling, interrupt driven I/O.
In a simple single-purpose system, even busy-wait is perfectly appropriate if no action is possible until the I/O access, but more often than not this was traditionally a consequence of simple hardware or non-multitasking operating systems.
Polling is often intimately involved with very low level hardware. For example, polling a parallel printer port to check whether it is ready for another character involves examining as little as one bit of a byte. That bit represents, at the time of reading, whether a single wire in the printer cable is at low or high voltage. The I/O instruction that reads this byte directly transfers the voltage state of eight real world wires to the eight circuits (flip flops) that make up one byte of a CPU register.
Polling has the disadvantage that if there are too many devices to check, the time required to poll them can exceed the time available to service the I/O device.

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Drugi wpis:

Metoda przeglądania elementów z danej grupy (proces sprawdzania elementów takich jak komputery czy kolejki pod kątem znalezienia elementu wymagającego obsługi)

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Czy naprawdę jesteś tak ułomny aby nie przetłumaczyć tak jak pisał kolega up i wyszukać. Debilizm ludzki nie zna granic.

[NOVIRAME]

http://megaslownik.pl/slownik/angielsko_polski/186835,polling