This document provides an introduction to computers, including their history, components, uses, and impact on society. It defines what a computer is and its basic functions of input, processing, output, storage, and communication. It also describes the major types of computers from embedded devices to supercomputers. Additionally, it explains computer networks and key Internet concepts like IP addresses, URLs, and email. Both the benefits of computers in our lives are discussed, such as access to information, as well as some risks like privacy issues and information integrity.