Industrial machinery, computers, microprocessors, house-hold appliances, medical equipment, the internet, e-banking, e-business, e-governance, etc. are all examples of the tremendous power and usefulness of digital techniques and systems. The growing breadth of digital electronics’ potential uses has sparked a level of interest in the field that has never been seen before. There has been a digital revolution brought about by the widespread use of digital technology. The primary goal of “Digital Electronics and Microprocessors” is to serve as a bridge between the extensive material of encyclopaedic reference works and the condensed needs of first-year college students. The needs of students were taken into account while this book was developed to ensure that it was both thorough and accessible. The book is meant to be used as a reference for undergraduate and graduate students in engineering programmes. Microprocessor and digital electronics designers can find useful information in this book regarding digital logic design. The goals of the book are twofold: to teach the reader the fundamentals of digital logic design and to show how those rules are used in the construction of modern, complicated microprocessor circuits. Although the fundamentals of digital logic design remain the same, advancements in both the design process and circuit imple-mentation have altered the field. Modern programmable logic devices (PLDs) like field programmable gate arrays (FPGAs) make it easy and fast to design and implement complex digital circuits thanks to the integration of CAD tools for logic synthesis, simulation, and PLD implementation.