The IEEE Circuits and Systems Society is a society of the IEEE. It is also known by the acronym IEEE CAS. In the hierarchy of IEEE, the Circuits and Systems Society is one of close to 40 technical societies organized under the IEEE's Technical Activities Board.
From the IEEE CAS web site, the field of interest of the society is defined to be
The first meeting of the IRE Professional Group on Circuit Theory was on March 20 of 1951. After the IRE and the AIEE merged, the IRE Professional Group on Circuit Theory became the IEEE Professional Technical Group on Circuit Theory on March 25 of 1963. In 1966 the group changed its name to the Group on Circuit Theory, and in 1973 became the IEEE Circuits and Systems Society.
The Society organizes many conferences every year and operates local chapters around the world. It coordinates the operation of several councils, task forces, and technical committees.
The Circuits and Systems Society oversees the publication of eleven periodical magazines and scholarly journals:
The Society organizes, sponsors, and co-sponsors many conferences every year (64 conferences in 2006). A list of them can be retrieved by the link: [1].
International Symposium on Circuits and Systems—Biomedical Circuit and Systems Conference [2] -- Design Automation Conference