RS 232 Communication
In telecommunications , RS-232 is a standard for serial communication transmission of data. It formally defines the signals connecting between a DTE ( data terminal equipment ) such as a computer terminal , and a DCE ( data circuit-terminating equipment , originally defined as data communication equipment ), such as a modem . The RS-232 standard is commonly used in computer serial ports . The standard defines the electrical characteristics and timing of signals, the meaning of signals, and the physical size and pinout of connectors. The current version of the standard is TIA-232-F Interface Between Data Terminal Equipment and Data Circuit-Terminating Equipment Employing Serial Binary Data Interchange , issued in 1997. An RS-232 serial port was once a standard feature of a personal computer , used for connections to modems , printers , ...