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To understand how a computer processes and stores data, we can think of it in terms of the human mind. The central processing unit, or CPU, is like the brain itself because it processes all the data that is received or created. Random access memory, or RAM, is like the short$-$term memory. It stores what is happening on the computer at any given time, but if the power to the computer is cut off, that information disappears. The hard drive is like the long$-$term memory$-$when you save a file, the computer saves your data permanently.

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