This book introduces us to the computer, the different elements that make it up and also how it works.Many people just see and this device works and even begins to think that the computer is more intelligent than man follows in its calculation speed, information storage capacity but forgets that these are men who by their reasonings have come to implement this device. For anyone who wants to put a computer to work, it is essential to understand its fundamentals, how it works, and know its basic components. Knowing the materials we use will allow us to use them properly. In this book we will have to talk about the computer (its hardware components, the functioning of these few materials), we will have to talk about the digitization system.