Throughout most of the history of personal computers, data has been transferred through serial ports to devices such as modems, terminals, various peripherals, and directly between computers. This is in contrast to a parallel port, which communicates multiple bits simultaneously in parallel. On computers, a serial port is a serial communication interface through which information transfers in or out sequentially one bit at a time.
Communication interface transmitting information sequentiallyĪ male D-subminiature connector used for a serial port on an IBM PC compatible computer along with the serial port symbol
