Digital electronics refers to a branch of electronics concerned with the study of digital signals as well as components which use or generate them. Digital electronic circuits are typically constructed from large assemblies of logic gates which are packed in integrated circuits. The digital circuit is made up of several components serving a specific purpose. These components are classified into two types, including active components and passive components. The active components include diodes and transistors, whereas, the passive components comprise inductors, capacitors and resistors. Digital circuits are employed in a variety of fields and are an essential component of electronic gadgets. There are various applications of digital electronics including quantum computing and rocket science, traffic lights, display of digital watches and operations of automatic doors. This book unravels the recent studies on digital electronics. It will help the readers in keeping pace with the rapid changes in this field.