MEMORY

   Memory consists of electronic components that store instructions waiting to be executed by the processor, data needed by those instructions, and the results of processing the data

Memory size is measured in kilobytes (KB or K),

megabytes (MB), gigabytes (GB), or terabytes (TB)

TYPES OF MEMORY

> Volatile

> Nonvolatile

   VOLATILE MEMORY

•When the computer’s power is turned off, volatile memory loses its contents.

•Volatile memory is temporary.

•RAM is the most common type of volatile memory

NONVOLATILE MEMORY

    •Nonvolatile memory does not lose its  contents when power is removed from the  computer.

•Nonvolatile memory is permanent.

•Examples of nonvolatile memory include ROM.

    Differences between volatile and non-volatile

    VOLATILE MEMORY

1) Loses its contents when power is turned       off (store data for temporary time only)

2) Can be read from and written to by the           processor and other devices.

3) Hold data or programs that are currently       being used by the processor
                         

4) RAM chip are assembled on a small             circuit board called memory module which     is plugged onto the memory slots.

NONVOLATILE MEMORY

  1)Does not lose contents when power is removed(store data permanently)

  2)Data is prerecorded for read only and cannot be modified or removed

  3)Contain a small startup program          (BIOS) which is used to boot the          computer 

 4)Exists as a chip on the motherboard