The Electronic Inustries Alliance (EIA) is an institution accredited by the American National Standards Instistute (ANSI). The EIA has produced several standards documents related to the production and function of electronc equipment and components. This tutorial will be restricted to the standards regarding serial communications.


  • EIA232 (RS-232) and pinout
  • EIA232-C (RS-232-C)
  • EIA232-D (RS-232-D)
  • EIA232-E
  • EIA422
  • EIA423
  • EIA485


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