Thursday 15 November 2012

RAM and ROM


RAM:




RAM short for Random Access Memory.
It is a type of memory and a data Storage device.
It is temporary memory.


Advantages:


  •  the main advantage of ram is you can "write" to ram at any time, and the erase the ram at any time an "rewrite" over it.
  • it is easily accessible.

Disadvantage:
  • It has a disadvantage in that you need to constantly supply it with power.
  • it will lose its information.
  • It is temporary memory.


ROM:



ROM short for Read only Memory.
It is a type of memory and is a data storage device.
It is a permanent memory.

Advantages:



  • ROM advantage is that (generally) once it is "written" to, it will be there forever.
  • Roms are often used in fixed situations like the chip that runs a dishwasher.
  • it does not require constant source of electricity.

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