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bps (Bits Per Second)

Latest Updated:03/01/2007


bps (Bits Per Second)


bps is a unit of data transfer rate that indicates the number of bits transferred each second in serial communication. In the case of UARTs, a different unit, the baud, is used, and the baud rate refers to the number of modulations in a second.
The data part is transferred at the defined rate, but since data communication is done with frames, each consisting of a constant amount of data, the frame processing of the various communication protocols has overhead, and the time required by transfer is longer than the time obtained by dividing the amount of data by the transfer bit rate. Even more time is required when the transfer operation is interrupted by processing that has a higher priority than the data transfer.

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