Binary logic coded control

Claim 1

IN A SELECTION SYSTEM, THE COMBINATION: A CENTRAL STATION, A PRIMARY GROUP SELECTION MEANS AT SAID CENTRAL STATION AT LEAST ONE PRIMARY GROUP DECODER, FIRST CABLE MEANS COUPLING SAID PRIMARY GROUP SELECTION MEANS AND SAID AT LEAST ONE PRIMARY GROUP DECODER, SECONDARY GROUP SELECTION MEANS AT SAID CENTRAL STATION, SECOND CABLE MEANS COUPLED TO SAID SECONDARY GROUP SELECTION MEANS AND TO SAID AT LEAST ONE PRIMARY GROUP DECODER, THIRD CABLE MEANS, AT LEAST ONE SECONDARY GROUP DECODER COUPLED TO SAID AT LEAST ONE PRIMARY DECODER MEANS VIA SAID THIRD CABLE, MEANS IN SAID PRIMARY GROUP SELECTION MEANS FOR TRANSMITTING A FIRST CODE HAVING A PLURALITY OF BITS IN PARALLEL TO SAID AT LEAST ONE PRIMARY GROUP DECODER OVER SAID FIRST CABLE MEANS, MEANS IN SAID AT LEAST ONE PRIMARY GROUP DECODER RESPONSIVE TO SAID FIRST CODE TO COMPLETE A PATH FROM SAID SECONDARY GROUP SELECTION MEANS THROUGH SAID SECOND CABLE MEANS, MEANS IN SAID SECONDARY GROUP SELECTION MEANS FOR TRANSMITTING A SECOND CODE HAVING A PLURALITY OF BITS IN PARALLEL OVER SAID SECOND CABLE MEANS, MEANS IN SAID AT LEAST ONE SECONDARY GROUP DECODER RESPONSIVE TO SAID SECOND CODE, CONDITION RESPONSIVE MEANS ASSOCIATED WITH SAID AT LEAST ONE SECONDARY GROUP DECODER, READOUT MEANS AT SAID CENTRAL STATION, AND FOURTH CABLE MEANS COUPLED TO SAID CONDITION RESPONSIVE MEANS FOR TRANSMITTING INFORMATION FROM SAID CONDITION RESPONSIVE MEANS TO SAID READOUT MEANS UPON RECEIPT OF SAID SECOND CODE BY SAID AT LEAST ONE SECONDARY GROUP DECODER.