Residue checking system

Claim 1

A RESIDUE ERROR CHECKING SYSTEM OPERABLE WITH A COMPUTER ADAPTED TO PRODUCE SIGNAL AS REPRESENTING EACH OF THE UNIQUE VALUES OF THE RESIDUES OF A QUOTIENT, A REMAINDER, A DIVIDEND, AND A DIVISOR, AS A RESULT OF THE PERFORMANCE OF A DIVISION OPERATION BY SAID COMPUTER, COMPRISING: A FIRST CIRCUIT MEANS RESPONSIVE TO THE SIGNALS REPRESENTING THE RESIDUES OF SAID DIVIDEND AND SAID REMAINDER FOR PRODUCING AN OUTPUT SIGNAL REPRESENTING THE RESIDUE DIFFERENCE BETWEEN THE RESIDUE OF SAID DIVIDENED AND THE RESIDUE OF SAID REMAINDER; SECOND CIRCUIT MEANS RESPONSIVE TO THE SIGNALS REPRESENTING THE VALUES OF THE RESIDUE OF SAID DIVISOR FOR PRODUCING A GATING SIGNAL FOR ALL NON-ZERO VALUES OF THE RESIDUE OF SAID DIVISOR; A THIRD CIRCUIT MEANS RESPONSIVE TO THE SIGNALS REPRESENTING THE RESIDUE OF SAID DIVISOR AND THE OUTPUT OF SAID FIRST CIRCUIT MEANS FOR PERFORMING A RESIDUE DIVISION OF SAID RESIDUE DIFFERENCE BY THE RESIDUE OF SAID DIVISOR; A FOURTH CIRCUIT MEANS CONNECTED TO OUTPUT OF SAID THIRD CIRCUIT MEANS AND RESPONSIVE TO SAID GATING SIGNAL FOR GATING THE OUTPUT OF SAID FOURTH CIRCUIT MEANS ONLY WHEN SAID GATING SIGNAL IS PRESENT; AND COMPARISON MEANS INCLUDING CIRCUIT MEANS FOR COMPARING THE GATED OUTPUT OF SAID FOURTH CIRCUIT MEANS WITH THE RESIDUE OF THE QUOTIENT GENERATED BY SAID COMPUTER AND CIRCUIT MEANS RESPONSIVE TO A SIGNAL REPRESENTING A ZERO VALUE OF THE RESIDUE OF SAID DIVISOR FOR COMPARING THE OUTPUT OF SAID FIRST CIRCUIT MEANS WITH THE RESIDUE OF SAID DIVISOR, WHEREBY AN EQUAL COMPARISON OUTPUT BY SAID COMPARISON MEANS VERIFIES THE CORRECTNESS OF THE DIVISION OPERATION PERFORMED BY SAID COMPUTER.