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Abstract:- The subject of the study is hardware design of fuzzy controllers as CMOS analog devices on the base of controller descriptions in the view of multi-valued logical functions. A functional completeness of summing amplifier with saturation in an arbitrary-valued logic is proven that gives a theoretical background for analog implementation of fuzzy devices. Compared with the traditional approach based on explicit fuzzification, fuzzy inference, and defuzzification procedures analog fuzzy implementation has the advantages of higher speed, lower power consumption, smaller die area and more. The paper illustrates a design example for real industrial fuzzy controller and provides SPICE simulation results of its functioning