Digital differential analyzers

Claim 1

A DIGITAL DIFFERENTIAL ANALYSER OF THE TIME-MULTIPLEX TYPE IN WHICH A PRE-ARRANGED CYCLE OF ELEMENTARY DIGITAL INTERGRATIONS IS REPEATEDLY PERFORMED, EACH ELEMENTARY INTEGRATION INVOLVING THE SELECTIVE ADDITION OF AN INTEGRAND VALUE TO A RESIDUE OF THE VALUE OF AN INTEGRAL TO PRODUCE AN INCREMENT AND A NEW RESIDUE, THE ANALYSER COMPRISING A FIRST STORE FOR SIGNALS REPRESENTING VALUES OF INTEGRANDS, A SECOND STORE FOR SIGNALS REPRESENTING VALUES OF RESIDUES, AN ARRAY OF DISCRETE STORAGE ELEMENTS ARRANGED IN GROUPS, MEANS FOR INTERROGATING SAID ELEMENTS IN SEQUENCE IN GROUPS TO PRODUCE REPRODUCED SIGNALS REPRESENTING INCREMENTS IN SAID INTEGRAND VALUES, EACH GROUP CORRESPONDING TO ONE INTEGRAND AND THE GROUPS OF SAID ARRAY BEING INTERROGATED IN THE ORDER OF SAID PRE-ARRANGED CYCLE, MEANS RESPONSIVE TO SAID REPRODUCED SIGNALS AND SIGNALS REPRESENTING INTEGRAND VALUES DERIVED FROM SAID FIRST STORE TO PRODUCE SIGNALS REPRESENTING AMENDED INTEGRAND VALUES, MEANS FOR DERIVING FROM SAID SECOND STORE SIGNALS REPRESENTING VALUES OF SAID RESIDUES IN SAID CYCLIC ORDER, MEANS FOR COMBINING SAID DERIVED SIGNALS REPRESENTING RESIDUES WITH SIGNALS REPRESENTING CORRESPONDING AMENDED INTEGRAND VALUES TO PRODUCE OUTPUT SIGNALS REPRESENTING INCREMENTS IN THE VALUES OF THE CORRESPONDING INTEGRALS, AND A PLURALITY OF CONDUCTORS EACH INDIVIDUAL TO AN ELEMENTARY INTEGRATION IN SAID CYCLE AND COUPLED TO DIFFERENT SELECTIONS OF ONE OR MORE ELEMENTS IN SAID ARRAY WHICH SELECTIONS CORRESPOND TO THE RESPECTIVE INTEGRATIONS IN ACCORDANCE WITH THE PRE-ARRANGED CYCLE OF INTEGRATIONS TO BE PERFORMED BY THE ANALYSER WHEREBY SAID OUTPUT SIGNALS CAUSE SAID SELECTIONS OF ELEMENTS TO STORE REPRESENTATIONS OF SAID INCREMENTS.