This newly revised book blends academic precision and practical experience in an authoritative introduction to basic principles of digital design and practical requirement in both board-level and VLSI systems. Reflection over twenty years of experience in both industrial and university settings, the author covers the most widespread logic design practices while building a solid foundation of theoretical and engineering principles for students hat helps in their progress in this dynamic field. The book covers the fundamental building blocks of digital design across many levels of abstraction ranging from CMOS gates to hardware design languages. Important function such as gates, decoders, multiplexers, flip-flops, registers, and counters and discussed at each level.