Described is a data processing system with an improved data processing operation which is comprised of a central processing unit, a main memory unit, a plurality of input/output control units and a common bus which interconnects all of the above units, wherein the common bus includes at least a data...http://www.google.com/patents/US4079354?utm_source=gb-gplus-sharePatent US4079354 - Data processing system with improved read/write capability
