This document provides an overview of computers and their basic components. It defines what a computer is and explains computer hardware such as the central processing unit, memory, storage, and input/output devices. It also discusses computer software, how information is input and output from a computer, and how the basic components work together. The document then gives examples of computer hardware, software, input devices, and output devices. It also provides instructions on how to create an email account and describes several job-oriented computer courses for graduates.