The book aims to shed light on some of the unexplored aspects of electronic engineering. It picks up individual topics and explains their need and contribution in the context of the growth of this subject. Electronic engineering refers to the science of designing devices like, electronic circuits, micro-controllers, micro-processors, etc. by using diodes, semiconductor devices, integrated circuits, etc. which are nonlinear and active electrical components. It combines elements from various fields like embedded systems, power electronics, analog electronics and digital electronics, etc. This text presents the complex subject of electronic engineering in the most comprehensible and easy to understand language. Such selected concepts that redefine this field have been presented in it. For someone with an interest and eye for detail, this textbook covers the most significant topics in the field of electronic engineering.