Friday, 20 November 2015

Virtual Memory

Virtual Memory
Modern operating systems provide a feature of temporarily transferring data pages from RAM (in
times of shortage) to Hard Disk so that the system functioning is not hampered, this feature is called Virtual Memory. "Memory Management Unit" or MMU is the address translation hardware in the CPU which automatically performs the task of translations (from virtual memory to physical memory). Virtual Memory is an integral part of modern computer architecture.
Putting it in the laymen language when the applications running on RAM need more space than available, to run smoothly, our Smart Operating System creates a temporary fragment in hard disk which it dedicates to be used as RAM i.e., part of the free space on hard disk is temporarily translated into RAM.
Benefits of Virtual Memory:
  • Increased security.
  • Using more memory than physically available.

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