RS232 (Recommended Standard 232) is one of the oldest and most widely adopted serial communication standards, developed by the Electronic Industries Alliance (EIA). It enables point-to-point data transmission between two devices, such as computers, displays, modems, or industrial controllers. RS232 uses serial transmission (bit by bit) over connectors such as DB9 or DB25, with voltage levels different from modern interfaces, often requiring converters. Simple, stable, and OS-independent, RS232 remains in use in industrial automation, embedded systems, and medical devices, despite being largely replaced in consumer electronics by faster modern interfaces.
RS232 (Recommended Standard 232)
RS232 is a classic serial communication standard for point-to-point data links over DB9/DB25 connectors, still used in industrial and medical devices.
Also known as: serial port, COM port
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