This document provides an introduction to computers. It defines a computer as an electronic device that receives input, stores or processes the input according to user instructions, and provides output in a desired format. It describes the basic components of a computer as input devices like keyboards and mice, and output devices like monitors and printers. It also distinguishes between software, which are computer instructions and data, and hardware, which are the physical parts of the computer like the motherboard, RAM, and disks. Common types of software include operating systems and web browsers.