This online book provides an introduction to Fuzzy Logic for C programmers, aiming to fill the need for tutorial material on the subject. The first chapter essentially consists of an editorial written by the author for the Electronic Engineering Times, which presented a case for the addition of linguistic variables to the programmer’s toolbox. The second chapter describes the implementation considerations of fuzzy logic on conventional, small, embedded micro-computers. The third and final chapter addresses the inherent reliability and self-scaling aspects of fuzzy logic,which are becoming increasingly important and which may in fact be the primary reason for the use of fuzzy logic.