This document provides an overview of the key components found on a computer motherboard. It discusses the types of motherboards, including ATX, baby AT and dual-processor boards. The main components described are the CPU, RAM, ROM BIOS, CMOS memory, ports and expansion slots. RAM is used to temporarily store programs and data, while ROM contains startup instructions. CMOS memory requires a small amount of power to retain settings like time and disk information. The CPU processes data and coordinates other components via the data bus and RAM. Ports and interface cards provide connections to peripheral devices.