What does RS232 stand for?ĭata transfer standards are developed by the Electronic Industry Association (EIA). Distances of up to 20 meters are the limit for reliable data transfer using the RS232 interface. It performs asynchronous transmission at a constant rate that is synchronized with the start pulse signal’s level. The RS232 protocol transmits data of wires employing signal levels that differ from the standard 5V in order to minimize signal interference. We will take a look at the serial port pinouts used to implement RS232 as well as some additional reference information concerning the protocol. The RS232 protocol is a popular serial interface that is used to connect computers to peripheral devices such as modems.
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