The International Electrotechnical Commission, a Geneva-based organization that develops and sets standards, including terms and symbols used to describe electrical circuits and devices through the International Electrotechnical Vocabulary; safety standards; standards for electromagnetic compatibility; electronic communication standards, etc. The IEC works through National Electrotechnical Committees and also cooperates closely with ISO, the International Standards Organization. As a result, many IEC standards are issued jointly with ISO and these are designated with an ISO/IEC prefix.