Binary adding circuit

Claim 1

A BINARY ADDING CIRCUIT FOR ADDING TWO SERIAL SIGNALS REPRESENTATIVE OF BINARY NUMBERS TO PRODUCE, BY THE TRANSLATION OF SELECTED ONES OF A TRAIN OF PERIODIC PULSES, A SUM SIGNAL REPRESENTATIVE OF THE SUM OF SAID NUMBERS COMPRISING: MEANS FOR SUPPLYING SAID SERIAL SIGNALS; MEANS FOR SUPPLY PERIODIC PULSES SYNCHRONOUS WITH THE PERIOD OF DIGITAL PULSES IN SUCH SERIAL SIGNALS; CONTROL MEANS RESPONSIVE TO SAID SERIAL SIGNALS FOR DEVELOPING PREDETERMINED COMBINATIONS OF GATING CONTROL SIGNALS INCLUDING FIRST MEANS FOR DEVELOPING A CONTROL SIGNAL OF A FIRST TYPE DURING THE OCCURRENCE OF A DIGITAL PULSE IN EITHER ONE OF SAID SERIAL SIGNALS AND OTHERWISE DEVELOPING A CONTROL SIGNAL OF A SECOND TYPE, SECOND MEANS FOR DEVELOPING A CONTROL SIGNAL OF SAID FIRST TYPE DURING THE SIMULTANEOUS OCCURRENCE OF DIGITAL PULSES IN BOTH OF SAID SERIAL SIGNALS AND OTHERWISE DEVELOPING A CONTROL SIGNAL OF SAID SECOND TYPE, CARRY STATUS INDICATING MEANS INCLUDING A BISTABLE CIRCUIT COUPLED TO SAID FIRST AND SECOND MEANS FOR DEVELOPING A CONTROL SIGNAL OF SAID FIRST TYPE DURING A NO-CARRY STATUS INDICATION AND OF SAID SECOND TYPE DURING A CARRY STATUS INDICATION, AND THIRD MEANS COUPLED TO SAID INDICATING MEANS FOR DEVELOPING A CONTROL SIGNAL EFFECTIVELY EQUIVALENT TO SAID SECOND TYPE IN RESPONSE TO A CHANGE FROM NO-CARRY TO CARRY STATUS AND FOR DEVELOPING A CONTROL SIGNAL EFFECTIVELY EQUIVALENT TO TWO SIGNALS OF SAID FIRST TYPE IN RESPONSE TO A CHANGE FROM CARRY TO NO-CARRY STATUS; AND GATING MEANS COUPLED TO SAID PERIODIC PULSE SOURCE AND RESPONSIVE TO SAID CONTROL SIGNALS FOR TRANSLATING SAID PERIODIC PULSES WHENEVER THE RATIO OF THE NUMBER OF SAID FIRST TYPE CONTROL SIGNALS TO SAID SECOND TYPE CONTROL SIGNALS DIFFERS IN ONE SENSE FROM A PREDETERMINED AMOUNT.