This text serves as a practical guide for the design of complex digital logic circuits, utilizing a modified and extended version of the basic ASM (Algorithmic State Machine) method. Unlike other texts, this text focuses on computer design rather than computer architecture, dealing with the detailed gate-level logic design of a basic computer system. It teaches the theory behind advanced digital design and uses several examples to help illustrate and clarify concepts and methods required for the design and implementation of a commercial microprocessor.