The fifth edition of this much sought-after textbook Digital Circuits and Design continues to provide lucid explanations of concepts, well-illustrated figures, graded problems and solutions and plenty of exercises for practice.The book is written for the first course on the subject for the undergraduate engineering students of Electronics and Communication Engineering, Electrical and Electronics Engineering, Information Technology, Computer Science and Engineering and allied programmes. It can also be used for the related courses taught in the B.Sc. /M.Sc. programmes including Applied Physics, Computer Science, Electronics and for the preparation of various competitive examinations.