The document provides an introduction to computers, including:
- Computers are everywhere and used for communication, information access, tasks like banking, transportation, education, entertainment and more.
- The main parts of a computer are the central processing unit (CPU), monitor, and keyboard. Additional peripherals include the mouse, printers, scanners and more.
- There are different types of computers including analog, digital, and hybrid computers. Computers can also be classified by size as microcomputers, mini computers, and mainframe computers.
- The document discusses turning the computer on and defines it can be in an off, standby, or on state. It also outlines the basic parts and functions of