The use of multiaperture cores for the realization of threshold functions of many variables

It is shown that threshold functions of many variables can be realized by writing these variables into a multiaperture core and then reading them out synchronously. The multiaperture core is a closed series magnetic circuit of elementary, e.g., toroidal, cores each of which serves to store one binary variable. During the read operation identical EMF pulses are induced in all one-turn figure-eight output windings. Their polarity depends on the value of the input variable. The threshold function is realized by summing the EMF induced in all the output windings whose number of turns are proportional to the weights of the corresponding variables. On one core it is possible to obtain simultaneously various threshold functions of the input variables. It is possible to expand the logical possibilities of the threshold element by executing some elementary logical functions of two or three variables at the input.