Toll charge computer

Claim 1

IN A COMPUTING DEVICE FOR DETERMINING THE TOTAL CHRAGE FOR A VARIABLE NUMBER OF UNITS, WHEREIN THERE IS A FIRST GIVEN CHARGE FOR ANY NUMBER OF UNITS UP TO A PREDETERMINED NUMBER OF BASE UNITS AND A SECOND GIVEN CHARGE FOR EACH UNIT IN EXCESS OF SAID PREDETERMINED NUMBER OF BASE UNITS, SAID DEVICE COMPRISING REGISTER MEANS FOR STORING SAID VARIABLE NUMBER OF UNITS AS A SERIES OF SIGNALS EQUAL IN NUMBER TO THE NUMBER OF UNITS STORED, NORMALLY CLOSED GATING MEANS, A NORMALLY ENABLED BASE UNIT COUNTER, A CHARGE COUNTER, MEANS FOR PRIMING SAID CHARGE COUNTER TO A COUNT MANIFESTING SAID FIRST GIVEN CHARGE, MEANS COUPLED BETWEEN SAID REGISTER AND SAID BASE UNIT COUNTER FOR SEQUENTIALLY ADVANCING THE COUNT OF SAID BASE UNIT COUNTER IN RESPONSE TO EACH STORED UNIT, MEANS COUPLING SAID BASE UNIT COUNTER TO SAID GATING MEANS FOR OPENING SAID GATING MEANS IN RESPONSE TO THE COUNT OF SAID BASE UNIT COUNTER HAVING BEEN ADVANCED BY SAID PREDETERMINED NUMBER OF STORED UNITS AND FOR DISABLING SAID BASE UNIT COUNTER IN RESPONSE TO THE OPENING OF SAID GATING MEANS, AND MEANS INCLUDING SAID GATING MEANS COUPLED TO SAID CHARGE COUNTER AND SAID REGISTER FOR SEQUENTIALLY ADVANCING THE COUNT OF SAID CHARGE COUNTER BY AN AMOUNT EQUAL TO SAID SECOND GIVEN CHARGE ONLY WHEN SAID GATING MEANS IS OPENED IN RESPONSE TO EACH STORED UNIT IN EXCESS OF SAID PREDETERMINED NUMBER OF BASE UNITS.