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Virtual memory |
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The use of permanent media (for example, hard drive) to simulate additional RAM (see swap file). This allows large applications to run in less physical RAM than they normally would require. When RAM runs low, the operating system uses a virtual memory manager program to temporarily store data on the hard disk like it was in RAM, which makes RAM free for data manipulation. When needed, the data is read back from the disk and reloaded into RAM. |
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