Abbreviation: RAM.

A read/write, nonsequential-access memory used for the storage of instructions and data.

RAM access time is essentially the same for all storage locations.

RAM is characterized by a shorter access time than disk or tape storage.

• http://www.webopedia.com/TERM/R/RAM.html
• Abbreviation: RAM.
  
  A read/write, nonsequential-access memory used for the storage of instructions and data.
  
  RAM access time is essentially the same for all storage locations.
  
  RAM is characterized by a shorter access time than disk or tape storage.
• http://en.wikipedia.org/wiki/Random_access_memory