The EIA is a non-profit organization representing manufacturers of electronic products. There are 300 member companies and approximately 200 committees and working groups in domestic and international standards development.
EIA RECOMMENDED STANDARDS
| RS-232-C | Interface between data terminal equipment and data communication equipment employing serial binary data interchange. This is the most common type of microcomputer interface, typically employing a 25-position connector. |
| RS-422 | Electrical characteristics of balanced digital interface circuits. |
| RS-423 | Electrical characteristics of unbalanced digital interface circuits. |
| RS-449 | General purpose 37-position and 9-position interfaces for data terminal equipment and data circuit-terminating equipment employing serial binary data interchange with control information on separate control circuits. |