Graphics Card

A Graphics Card also known as a Video Card is an internal device which controls and produces the display on your screen. Graphic cards come with various specifications, and unless they are built-in to the motherboard (mainboard) they have their own RAM onboard.The term is usually used to refer to a separate, dedicated expansion card that is plugged into a slot on the computer's motherboard, as opposed to a graphics controller integrated into the motherboard chipset. An integrated graphics controller may be referred to as an "integrated graphics processor" (IGP).

A Graphics Card also known as a Video Card is an internal device which controls and produces the display on your screen. Graphic cards come with various specifications, and unless they are built-in to the motherboard (mainboard) they have their own RAM onboard.

Internal memory

Internal memory is used for two main purposes:
· To store programmes that are being run
· To store data that the program works on.
Although programs (ie software) may seem different from data, they are treated in exactly the same way- the computer excutes a program, instruction by instruction.
Within the computer there are two types of memory:
Internal cache- this is located inside the CPU chip also called a primary cache or on- die cache.
External cache- is also on the motherboard but not within the CPU chip- also called secondary cache.

Peripherals

A peripheral is a piece of computer hardware that is added to a host computer ,i.e. any hardware except the computer, in order to expand its abilities. More specifically, the term is used to describe those devices that are optional in nature, as opposed to hardware that is either demanded or always required in principle. Printers, scanners, USB keys, and DVD players are the essential extensions to the basic PC.

Ports

Ports are names or "handles" given to various network connections your computer uses to communicate with other computers. For example, your connection to the Internet is through a port protocol called TCP/IP (Transmission Control Protocol/Internet Protocol) using well-known ports such as HTTP or "port 80."

HARD DRIVE CONFIGURATION AND CONTROLLERS

In computer hardware, a 'port' serves as an interface between the computer and other computers or peripheral devices. Physically, a port is a specialized outlet on a piece of equipment to which a plug or cable connects. Electronically, the several conductors making up the outlet provide a signal transfer between devices. Hardware ports may be physically male (unusual, since protruding pins easily break, a fate best left to inexpensive matching cable ends) or female (usual on equipment).

Fan and heat sink

Fan and heat sinks are used on the computer so that it stops it from over heating. It does this by spinning round and sending cool air around it., Heat sinks are used in a wide range of applications wherever efficient heat dissipation is required; major examples include refrigeration, heat engines, cooling electronic devices and lasers.

Power Supply

In order to run a computer and electrical current and supply is needed this is done by when the computers are made by adding power supply units. Computer power supplies are rated based on their maximum output power. Typical power ranges are from 300 W to 500 W (lower than 300 W for Small form factor systems). Power supplies used by gamers and enthusiasts sometimes range from 500 W to 1000 W, with the highest end units going up to 2 kW for servers and extreme performance computers with multiple processors, several hard disks and multiple graphics cards.

Bios

Every computer with a motherboard includes a special chip referred to as the BIOS or ROM BIOS (Read Only Memory Basic Input/Output System). The BIOS includes instructions on how to load basic computer hardware. The BIOS also includes a test referred to as a POST (Power On Self Test) which will ensure that the computer meets requirements to boot up properly. If the computer does not pass the POST, you will receive a combination of beeps indicating what is malfunctioning within the computer.