Experimental interfacing boards for 8085 microprocessor

Abstract

A programmable interface device is designed to perform various input/output functions. Such a devices can be set up to perform specific functions by writing an instruction. This project introduces four of these devices , that is 8284, 8255, 8259, and 8251. Explains the theory of each chip then provide many suggested experiments for each chip with 8085 mp. Therefore, the laboratory becomes better and better since our project mainly has tow advantages the first is using 8085 KIT in educational way the second it is the first step in building interfacing manual for the MIC LAB.