Random access memory

Random access memory (usually known by its acronym, RAM) is a kind of data storage used in computers. It takes the figure of integrated circuits that allow the stored data to be accessed in any order — that is, at random and without the physical group of the storage medium or a physical reading head.
The word "random" refers to the fact that any piece of data can be returned rapidly, and in a constant time, inspite of its physical location and whether or not it is linked to the previous piece of data. This contrasts with storage mechanisms such as tapes, magnetic disks and optical disks, which rely on the physical movement of the recording medium or a analysis head. In these devices, the movement takes longer than the data transfer, and the retrieval time varies depending on the physical location of the next item.