Computer Architecture

This book is concerned with computer architecture as a computer science course which deals with computer hardware. The book is authored by collecting slides in the lecture on computer architecture during one semester; each page is given as a slide. This book is intended for ones who study computer architecture with their interests and is composed of eight lectures. This book defines abstract models of ALU (Arithmetic Logic Unit), CPU, and memory as a mini-computer, and their executions are studied for understanding operations in computers. It provides the basic computer model as the first step of understanding modern computer models.