The microprocessor forms the core of modern digital and embedded systems
and plays a vital role in the functioning of computers, automation systems, and
electronic devices. Among early microprocessors, the 8085 Microprocessor
holds great educational importance as it provides a strong foundation for
understanding microprocessor architecture, programming, and interfacing
concepts. This textbook, “EL-223: 8085 Microprocessor,” has been prepared to
introduce students to the fundamentals of microprocessor systems in a simple
and practical manner.
The book focuses on the architecture and operation of the 8085
Microprocessor. The contents include an introduction to microprocessors,
internal architecture of the 8085, instruction set and addressing modes, assembly
language programming. The concepts are explained with clear descriptions,
diagrams, examples, and step-by-step programs to help students understand both
theoretical principles and practical implementation.
This textbook aims to develop analytical thinking, problem-solving ability,
and programming skills among undergraduate students. It will be useful for
students, teachers, and beginners who wish to gain a clear and systematic
understanding of microprocessor fundamentals and applications.
The author expresses sincere gratitude and heartfelt thanks to Mr. Rangrao
Patil, Prashant Publication, Jalgaon, for his valuable guidance, encouragement,
and support in bringing this textbook to publication.
Constructive suggestions from readers for further improvement of the book
will be gratefully acknowledged.