Digital Systems are far better than Analog systems in terms of processing, storage and noise tolerance. There are various advantages of Digital systems over Analog systems and are discussed in details in the book. Introduction to Digital Systems is a core course designed for non-ECE students at the undergraduate level to familiarize them with the fundamentals of Digital Electronics, Digital Communication Systems and Signals and Systems. This book is intended to be used as a self-study guide to understand Digital Systems thoroughly. It can also be used as an alternative to the text books of Digital Electronics, Digital Communications and Signal and Systems for ECE students as it integrates the basics of all three areas. Starting with the basics of digital electronics in detail, it covers signals, systems, Fourier transformation of signals, conversion of analog signals to digital signals and then transmission of the digital signals has been covered in the book. Thus, if you are looking for a complete self-study course or a concise reference text or a course text that is readable and straightforward in Digital Electronics, Digital Communication and DSP, this book will provide the solution..