+RS-232 is a venerable standard for [Serial Port](/wiki/serial_port) communication, defining the electrical characteristics and timing of signals. It enables the connection between data terminal equipment and [Data Communication](/wiki/data_communication) equipment, once a ubiquitous interface for modems and peripherals.
+## See also
+- [UART](/wiki/uart)
+- [Modem](/wiki/modem)
+- [USB](/wiki/usb)
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