An electronic processing apparatus comprises one or more remote interactive display devices and a calculator unit, wherein the display device comprises at least a screen, a connector selectively connectable to the calculator unit, a user interface device and a microprocessor, whereas the calculator unit comprises at least one or more connectors, able to be selectively connected to the connector, a processor and a non-volatile memory. There is also a single connection element able to connect the connector and a selected one of the connectors of the calculator unit, both for data exchange and also for the transfer of energy for electric feed. The display device, through the connection element is able at least to transmit, through the connector, information relating to the own functioning parameters thereof to the calculator unit, which are compared with predetermined information recorded in the non-volatile memory so as to identify and select the functioning parameters of the display device and to obtain an automatic configuration of the display device.