For this new edition, the authors have meticulously worked to provide the right balance between existing and new material while keeping the size of the book within reason. This is a growing challenge due to revolutionary digital technology. Industry’s movement from using schematics to using hardware description language (HDLs) to describe complex digital systems has rendered obsolete many topics previously considered to be foundational. In addition, new technology demands the expansion and emphasis of other traditional concepts as it introduces many new tools and techniques for developing and analyzing digital systems.