define the following. 1.cpu 2.ram 3.hard disk 4.back up 5.for loop
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1. Central processing unit (CPU), principal part of any digital computer system, generally composed of the main memory, control unit, and arithmetic-logic unit.
2.RAM stands for random access memory. ... RAM is a form of volatile memory, which means that it only holds onto data while the chip is powered and erases everything when you shut down the PC. RAM memory is measured in gigabytes (GB).
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