System comprising a plurality of satellite units capable of talking to a central processing unit by way of a common line and interface device for such a system

摘要

System comprising a central processing unit 1 and a plurality of satellite units 2.i linked to one another by way of a line 3. According to the invention, the system is characterised in that each interface device comprises an information emission circuit controlled by the instructions decoded by a decoder. Use of telephone line as common line. <IMAGE>