What is the difference between Volatile and Nonvolatile memory ?

Volatile memory means that the memory will lose its contents of data in case of source power shutdown, non-volatile memory means that the memory will not lose its contents because it has an attached battery to supply power in case of main power shutdown and the contents will not be lost for the time the battery can feed the memory untill it is totally discharged, and when the source power start again, the battery will keep charging.

volatile memory is also called as ram (random access memory) it is temperory memory store in your ram when your system is on . it store in your ram unless its on when the system is turn off the memory which it carry and store is volatile (gone). where as non volatile memory is called as (rom) read only memory which cannot be vanished even turn off your system . It is bydefault and built in by the manufacturer at the time of assembled the system or fixing the rom on the mother board .