A terminal controller system is described wherein several feature cards are plugged into slots on a board, and I/O signal cables are connected between cards and/or remote multiplexors or terminals. A special purpose card identification (ID) bus is driven by the feature cards and received by an ID adapter....http://www.google.fr/patents/US4760553?utm_source=gb-gplus-shareBrevet US4760553 - Terminal system configuration tracing method and apparatus
Terminal system configuration tracing method and apparatus
