Virtual memory makes application programming easier by hiding fragmentation of physical memory; by delegating to the kernel the burden of managing the memory hierarchy(eliminating the need for

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Virtual memory is an integral part of a modern computer architecture; implementations usually require hardware support, typically in the form of a memory management unit built into the CPU. While not necessary, emulators and virtual machinescan

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In the 1940s and 1950s, all larger programs had to contain logic for managing primary and secondary storage, such as

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Nearly all current implementations of virtual memory divide a virtual address space into pages, blocks of contiguous virtual memory addresses. Pages on contemporary systems

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Some operating systems provide for swapping entire address spaces, in addition to whatever facilities they have for paging and

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• CPU design
• Page (computing)
• Cache algorithms
• Memory allocation
• Memory management (operating systems)

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Some systems, such as the Burroughs B5500, use segmentation instead of paging, dividing virtual address spaces into variable-length segments. A virtual address here consists of a segment number and an offset within the segment. The Intel 80286

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