The book on basic microprocessor and X86 Family will be useful to the staff and students who are interested in digital electronics. This book is written to understand the working of microprocessor 8086 and how to interface the peripheral chips to processor. This information is helpful to Electrical Engineering, Electronics Engineering, Computer Engineering, Electronics and Telecommunication Engineering, All the students of B.Sc. B.C.S. The Diploma students of above branches can also refer this book. After reading this book student and staff feels the up-gradation of basic knowledge of processor. The interest to learn about processor and micro-controller will be increased.