set of input data i and the membership function i u2032 corresponding to said term t are also shown as shown in fig2 a and 2b the present invention includes a new inferential unit 1 which determines exhaustively the overall degree of truth w in an inference rule r the inferential unit 1 is provided by means of a modular structure which can be configured in such a manner as to process multiple fuzzy rules in parallel by way of example let us consider a rule r 1 formed as follows if a is a u2032 and not b is b u2032 or not c is c u2032 and d is d u2032 then the antecedent part of this rule r 1 is made up of four terms tj placed between round parentheses and takes on a value determined by applying thereto the logical operators present and or and not assigning to them decreasing priority in the order not and or in the graphs of fig1 a 1d are shown the weights u221d a u221d b u221d c and u221d d for the four terms tj in fuzzy logic semantics with the operators and and or are associated respectively minimum and maximum operations between two or more elements while with the operator not is associated a complementary operation for one in the universe u the exemplary rule r 1 is then solved in the method in accordance with the present.