A well established and an exciting field, Electrical Engineering broadly involves working with various electronic devices ranging from pocket calculators to super computers. One of the most important reasons for the unprecedented growth of digital electronics is advent of integrated circuits; in fact digital systems have invaded all works of life. The text not only lays strong emphasis of basic principal but also incorporate topics and contents with advanced concepts. A careful selection of the text material and worked out examples (simple to more complex) enable the students to have in depth knowledge aboutdigital circuits and design aspects and its application. This book also provides various methods and techniques suitable for variety of digital system design application.