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ANSWER I assume you mean polling, where a master device requests the status of a slave device. Another option for a design would be to have the slave device alert the master device when its status has changed. In either case, the master device can then act on the slave's status change. For example, if a computer polls its keyboard, it reads the status at an interval that allows it to detect a keypress. For the other approach, the keyboard has a controller that samples the keyboard (usually much more frequently than the master computer would be polling) and transmits a key code to the main computer.

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Herbert Boyer

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Q: What is polling?
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What is a sentence for polling booth?

Voters gathered at the polling booth to cast their ballots in the local election.


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The Perils of Polling was created on 2000-10-01.


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