Introduction

The profound technological, economic, political and ethical changes brought about by information technology will affect every one of us. You may be wondering what digital technology is and just what is meant by having a digital life. A fundamental idea is that digital technology is any technology based on representing data as sequences of numbers. Computers use digital technologies; so the for benefit of this unit the term digital life refers to the influence of computers, in a wide variety of forms, on the world. It also provides a more detailed explanation of the internal structure and workings of a typical computer. In this unit, you will learn a little about the historical development of computers and their role in today’s society, and you will consider examples of digital technologies in the world around you and their influence on your life. You will also gain a better understanding of what makes a computer work by exploring what’s inside a typical personal computer.