This document provides an introduction to basic computer hardware components. It outlines the main internal components like the processor, RAM, motherboard, hard disk, and BIOS. It describes the processor as the brain of the computer and lists common processor types. It defines RAM and describes the two main types as static and dynamic. External peripherals are also listed, including input devices like the keyboard and mouse, as well as output devices such as the monitor, printer, and modem. The document concludes by mentioning computer case form factors.