Abstract: In this paper, we can see a brief description to fuzzy logic operation and Logic gates. Here we see how Fuzzy Logic extends and generalizes classical logic with propositional logic. Proposition logic deals with finding truth values of formulas containing atomic propositions, whose truth value is either zero or one, connected by “and” () “or” (), implication () etc...Finally we find truth values of formulas using a t-norm for  and a t-co norm for .