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Language: en

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You may already know that there are a lot
of important parts inside a desktop computer,

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but what exactly do they do?

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In this video, we're going to take a look
inside, to show you the various components

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that make a computer work.

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Every computer has a large circuit board called
a motherboard.

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This contains some of the most important parts
of your computer such as the CPU, also called

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the Central Processing Unit or processor.

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The CPU is sometimes called the brain of the
computer, because it processes information

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and carries out commands.

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Since it tends to get hot, it's covered by
a piece of metal called a heat sink, which

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draws heat away from the processor.

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The motherboard also contains your computer's
RAM, or Random Access Memory.

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This is the short-term memory that your computer
uses whenever it's performing calculations.

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However, you can't store your files there,
because the RAM is cleared when you turn off

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the computer.

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For long-term storage, your computer uses
a hard drive, which keeps all of its data

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even when the computer is turned off.

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Most hard drives use a magnetic platter to
store data, but many newer computers have

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solid-state drives, which are faster and more
durable, but also more expensive.

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If you want to upgrade your computer, you
can add expansion cards to the motherboard's

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expansion slots.

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You can add a video card to get better graphics
performance, or you can add a wireless card

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to connect to your wireless home network.

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Of course, your computer's components need
electricity to run.

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The power supply unit is designed to take
the power from the wall outlet and send it

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to all of the different components that need
power.

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A desktop computer is a pretty complex machine,
but now that you've seen what goes on inside,

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it should be a little less mysterious.