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Computers work with immediate storage called RAM (Random Access Memory) and longer term storage called ROM.

When a Computer runs an Application, the Computer needs to remember stuff to run the application, such as what the program looks like. This is Graphics Memory, and one example of RAM.

I encourage you to look at the Wikipedia page for RAM (included in related links), this may provide more insight.

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14y ago
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10y ago

RAM - is fast, temporary memory. A hard-drive is slower, but permanent. It's quicker for a computer to 'load' data into RAM, than to leave it on the hard-drive. Aditionally, all data in RAM is lost when the power is switched off. The data on a hard drive stays there until it's wiped by the user.

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13y ago

Computers have both immediate access store and backing store so the computer can save a short term memory and a long term memory.

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Q: Why do computers have both immediate access store and backing store?
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