BIOS stands for Basic Input Output System and is a small chip found on all motherboards. The BIOS contains information for Manages data between the computer's operating system and connected devices such as hard drive, keyboard, mouse, and printer. When the BIOS starts the computer, it first determines whether all attachments are OK and operational, and then loads the operating system from the hard drive into the computer's RAM. The motherboard is the main circuit of a microcomputer. It contains the CPU (central processing unit), BIOS (basic input and output system), as well as the graphics card, sound card, hard disk, disk drives, expansion slots and external slots, e.g. USB. The motherboard is the main component to connect all the essential parts of the computer together. A computer processor is called a CPU (central processing unit) and is the brain of the computer. The CPU carries out computer instructions by performing operations such as mathematics. The processor also communicates with all the other components of the computer and tells them what to do. The processor executes millions of instructions per second. This processor also connects to the motherboard because the processor is located on the motherboard. Almost all computers have heat sinks, they are located on the motherboard to keep the CPU cool and prevent it from overheating. Overheating can cause your computer to crash. The heatsink is a device attached to the processor chip that has fins to maximize surface area and dissipate heat. It absorbs heat from the processor and therefore keeps the temperature low. The heat sink is located on the motherboard, directly above the CPU. The power supply or... middle of the card... output system) a chip on your motherboard that contains instructions on how to boot the system. Specialized tabs are tab-specific tasks to be performed and are there solely to do that job. Specialized cards are things like sound, graphics, and network cards. Specialized cards are expansion slots that allow you to add new cards. A sound card is an expansion card for your computer that allows the input and output of audio signals. This allows you to listen to audio, and if the computer didn't have a sound card you wouldn't have any sound. A graphics card is a hardware component installed in your computer that allows the computer to process images by rendering 3D and 2D graphics. A network card is a hardware component that allows the computer to communicate with a network. Nowadays, they are rarely used because most computers have them built-in.