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Virtual memory Flashcards
OCR GCSE J277 Computer Science specification
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Virtual memory
A section of secondary storage used as temporary RAM when the physical RAM is full.
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Purpose of virtual memory
Allows the system to run more applications than the physical RAM can hold by temporarily storing data on secondary storage.
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How virtual memory works
Data not currently being used is moved from RAM to secondary storage, freeing up space in RAM for active processes.
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Disadvantage of virtual memory
Accessing data from secondary storage is slower than accessing data from RAM, which can reduce performance.
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