1. Method of pattern recognition comprising the steps of: 1) inputting a pattern of data with the application of input selected from the group consisting of the presence of electrical input comprising a binary logic level 1 input and the absence of electrical input comprising a binary logic level 0 input into one input of each of at least two exclusive-nor logic circuits, wherein a pattern of data is stored; 2) inputting a pattern of data for comparison with the stored pattern of data with the application of input selected from the group consisting of the presence of electrical input comprising a binary logic level 1 input and the absence of electrical input comprising a binary logic level 0 input into the other input of each of the exclusive-nor logic circuits, wherein each exclusive-nor circuit produces output selected from the group consisting of the presence of electrical output comprising a binary logic level 1 output when both inputs have the same datum input and the absence of electrical output comprising a binary logic level 0 output when both inputs have different datum input; and 3) measuring the outputs of the exclusive-nor logic circuits collectively with a measuring apparatus, wherein the percentage of the pattern of data input for comparison which matches the pattern of data stored in the exclusive-nor circuits is directly proportional to the magnitude of the collective output of the exclusive-nor circuits.