A network for providing sensing, communications and control is described. A plurality of intelligent cells each of which comprises an integrated circuit having a processor and input/output section are coupled to the network. Each of the programmable cells receives when manufactured a unique identification...http://www.google.com/patents/US5113498?utm_source=gb-gplus-sharePatent US5113498 - Input/output section for an intelligent cell which provides sensing, bidirectional communications and control
