what is Virtual memory

Virtual memory
         Basically virtual memory is a software memory so that are called system software

 

Virtual memory is a memory management capability of an operating system (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.



About RAM and ROM....................
   
According for computer science and Virtual memory......
RAM is a type of volatile memory because it will lose its data if the power is turned off. ROM or Read Only Memory is a type of non-volatile memory which means it keeps its data even if the power is turned off. ... Virtual Memory is stored in secondary storage, typically on the hard drive and is used when the RAM is full.