UART

A universal asynchronous receiver/transmitter (usually abbreviated UART, which is pronounced "you art") is a type of "asynchronous receiver/transmitter", a piece of computer hardware that translates data between parallel and serial interfaces. Used for serial data telecommunication, a UART converts bytes of data to and from serial bit streams represented as electrical impulses similar to Morse code. UARTs are commonly used in conjunction with other communication standards such as RS-232.

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