The objective of the present research work is to introduce a microcontroller based fuzzy logic system that can be adapted for most of fuzzy logic applications. The system consists of a hardware target board based on MCS'51 microcontroller and supporting software running under PC Windows The system is targeted for developing fuzzy logic based system and it supports fuzzy logic design, evaluation, Knowledge file generator and downloading process to the target hardware via RS-232 serial communication. Optimization methods are used to produce efficient code that runs faster and uses less memory space in the target hardware. The system was tested on a practical Fuzzy Inference System (FIS) example called Fuzzy channel equalizer. The fuzzy channel equalizer is implemented and tested via the proposed system. The system speeds up the design process of FIS by integrating the software and hardware into simple package with the ability to simulate the system function on PC or on real application.