In 1969, EIA with Bell Laboratories and other parties established a recommended standard for interfacing terminals and data communications equipment. The object of this standard was to simplify the interconnection of equipment manufactured by different firms.
The standard defines electrical, mechanical, and functional characteristics. The electrical characteristics include parameters such as voltage levels and cable impedance. The mechanical section describes the pin number assignments and plug. The connector itself, however, is not specified. The functional description defines the functions of the different electrical signals to be used.
The Electronics Industry Association (EIA) has developed many standards for data communication. EIA standards where originally marked with the prefix "RS". "RS" means that it is a recommended standard, but the standards are nowadays generally indicated as "EIA" standards.
RS-232 was introduced in 1962. The standard evolved over the years and had the third revision in 1969 (RS-232C). The fourth revision was in 1987(RS-232D also known as EIA-232D). RS-232 is identical to the standards CCITT V.24/V.28, X.20bis/X.21bis and ISO IS2110
The standard defines electrical, mechanical, and functional characteristics. The electrical characteristics include parameters such as voltage levels and cable impedance. The mechanical section describes the pin number assignments and plug. The connector itself, however, is not specified. The functional description defines the functions of the different electrical signals to be used.
The Electronics Industry Association (EIA) has developed many standards for data communication. EIA standards where originally marked with the prefix "RS". "RS" means that it is a recommended standard, but the standards are nowadays generally indicated as "EIA" standards.
RS-232 was introduced in 1962. The standard evolved over the years and had the third revision in 1969 (RS-232C). The fourth revision was in 1987(RS-232D also known as EIA-232D). RS-232 is identical to the standards CCITT V.24/V.28, X.20bis/X.21bis and ISO IS2110