Remote Control Plants, in the Nature of Modular Data Processing and Exchange Master, Sub-Master, Remote or Local Control Stations or of Combinations Thereof, Each Plant Comprising Senders and Receivers Equipped with Micro- or Minicomputers, Bus Systems, Input/Output Units, Peripheral and System Interfaces, Digital Clocks and Test and Supervisory Units, for Use in Electricity, Gas, Water or Oil Supply Networks, in Radio and Television Transmission Networks, for Traffic Control, for Environment...