This unique book describes how digital circuits are designed, from the basic circuit to the advanced system. It covers combinational logic circuits, which collect logic signals, to sequential logic circuits, which embody time and memory to progress through sequences of states. The book also highlights digital arithmetic and the integrated circuits that implement the logic functions.Based on the author's extensive experience in teaching this subject, the book is full of practical value, and is presented in a compact and digestible style. There are worked problems and examples with abbreviated solutions. The worked solutions are accompanied by demonstrations to ensure that the design material and the circuits' operation are well appreciated.