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From latin disposĭtus ("has"), a device is a device or a mechanism that develops certain actions. Its name is due to the fact that this device is prepared to accomplish the purpose of the user. Examples: «they gave me a machine espresso coffee but I still do not understand how works the device», «a specialist recommended me for a device that regulates the intensity of the light», "this oven has a device which allows to program what time it turns and it turns off.»
The concept of device is very popular in computer science and information technology, as this term is used to refer to devices and other systems related to the use and operation of computers.
In this sense, a data storage device is a component that allows to read or write (Edit) digital information on a support. The device, therefore, saves computer files logically and physically. A hard drive, a DVD - ROM drive and a memory card are data storage devices.
Standalone device means any one whose power is independent (separate) and which can be connected (or connected) without a connection. In the specific field of Informatics, an autonomous device can work without be connected to the computer (such as a multifunction device).
A braille device is an electronic machine that interprets or generates braille, physically or virtually. These devices are often used as external devices to a computer.
In general terms, finally, a device can be the organization that takes place for action: "police has set up a device to catch the burglar inside the Bank."