Fundamentals of Electronic Engineering fulfills the requirements of a textbook on basic electronic engineering, a core course for undergraduate engineering students of all branches. The book deals with fundamental concepts and principles of the subject. Concepts and theories are properly explained and illustrated with examples in this book. Three complete chapters deal with the digital systems including microprocessors, microcomputers, minicomputers, and microcontrollers. The book includes a chapter on analogue, digital, and optical communication systems.