Electronics are concerned with the flow, emission and control of electrons in matter and vacuum. It deals with its engineering aspects as well as their applications. Electronic devices primarily contain an electronic circuit which consists of active and passive electrical components. Electronic engineering deals with the use of active and nonlinear electrical components in order to design VLSI devices, electronic circuits and other electronic devices. Some of the commonly used electrical components in this field include transistors, integrated circuits and diodes. Electronics engineering also facilitates the implementation of the principles and algorithms developed in areas such as signal processing, telecommunications, computer engineering, etc. This book studies, analyses and upholds the pillars of electronic engineering and its utmost significance in modern times. Also included in this book is a detailed explanation of the various concepts and applications of this domain. This textbook is an essential guide for both academicians and those who wish to pursue this discipline further.