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25 February 2018

Define flash memory, cache memory and virtual memory




Flash memory: Flash memory is a non-volatile memory chip used for storage and for transferring data between a personal computer (PC) and digital devices.
It has the ability to be electronically reprogrammed and erased. It is often found in USB flash drives, MP3 players, digital cameras and solid-state drives.

Cache memory: Cache memory is a small sized type of volatile computer memory that provides high speed data access to a processor and stores frequently used computer programs, applications and data.

Virtual memory: Virtual memory is a memory management capability of an OS that uses hardware and software to allow a computer to compensate for physical memory shortages by temporarily transferring data from random access memory (RAM) to disk storage.
OR
Virtual memory (VM) is a feature developed for the kernel of an operating system (OS) that simulates additional main memory such as RAM (Random Access Memory) or disk storage.



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