1. 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.
2. Polling is the process where the computer or controlling device waits for an external device to check for its readiness or state, often with low-level hardware.
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