This comprehensive textbook on digital circuits is developed to provide a solid grounding in the foundations of basic design techniques. Using a student-friendly writing style, the text introduces the students to digital concepts in a simple and lucid manner with an emphasis on practical treatment and real-world applications. A large number of typical examples have been provided, so that the students can understand the related concepts clearly. The book blends basic digital electronic theory with the latest in digital technology. The text is, therefore, suitable for use as course material by undergraduate students of electronics and communication engineering, electrical and electronics engineering, computer science and engineering, instrumentation engineering, telecommunications engineering, biomedical engineering, and information technology