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RAM

Random access memory, temporary storage for data. It comes in different sizes for example 512 MB, 2BG, 4GB, 8GB. The most common being around 2GB. The more RAM you have the quicker your computer runs.   

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Processor- (CPU)

Central processing Unit, it  is the unit that will processes all data.  It is measured in MHz or Ghz.

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Hard drive

The primary storage in a computer. Hard drives come In different sizes such 300 Gb, 500 Gb, 1TB, 3TB’S. The higher the memory, the more cost it’s going to be.

If you have a solid state hard drive, your computer will run at a lot quicker speed because there are no moving parts.  or if you have different hard drives running different programs your computer will run at a quicker speed.

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CPU coolant fan

Cools the CPU to stop in over heating, and therefore running slower or not working. 

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Computer screen

shows everything visually. Everything you input into the computer will be shown on the screen.

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PS/2

They are the connectors that connect a mouse/ keyboard to a computer. They are basically input devices for a mouse/ keyboard. It is key to point out they've been replaced by USB’s now.

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Motherboard

This is the printed circuit board (PCB),  it connects everything together on a computer, its like the human heart, it is what lets everything communicate in a computer. If you have a lot of cables in the computer that are tangled and tightly squashed the computer will heat up and run slower, also the hardware components  will not communicate as well.

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BIOS (Basic Input/ output system)

when your computer is switched on, the BIOS kicks in to help run your computer. It is the basic process that checks that your computer is operating efficiently, by checking all the hardware of your computer e.g.  Hard drive and the CPU.

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Hard drive controller (HDC)

allow the computer to transfer information onto the hard drive, it also allows the computer to read of the hard drive. The Controller is built onto the hard drive normally located on the back of a hard drive, sometimes they can be on the bottom of the hard drive

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SATA ( Serial Advanced Technology Attachment).

It uses a Serial ATA cable to connect the motherboard to the hard drive. They are used in modern day laptops and computers because they are quicker then IDE.

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IDE (Integrated Drive Electronics)

It is another form of connecting the motherboard to the hard drive.  In modern computers an Enhanced Integrated Drive Electronics (EIDE) is more likely to be used.

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Device drivers

They link the operating system to a peripheral device. This allows for the operating system to interact with other programmes.

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Data transfer rate

It is the amount of time it takes the Operating System to read data of a hard drive and deliver It to the processor so the user can work with the data. It is measured in bytes per second. It doesn’t only for hard drives there is also a rate measured for data being transferred from a USB port and CD-ROM.

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