Patent US 5,204,935

A fuzzy logic circuit for operating a fuzzy logic with "fuzziness" taken into account has an operation section memory unit in which the result of operation to be outputted in response to an input is stored in an address specified by the input, the result of operation being rewritable, whereby the change in the contents of a fuzzy logic operation to be performed can be handled merely by rewriting the contents of the operation section memory unit.