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Encyclopedia > Peripherals
For an account of the words periphery and peripheral as they are used in biology, sociology, politics, computer hardware, and other fields, see the periphery disambiguation page.

A peripheral is a type of computer hardware that is added to a host computer, in order to expand its abilities. More specifically the term is used to describe those devices that are optional in nature, as opposed to hardware that is either demanded, or always required in principle.


The term also tends to be applied to devices that are hooked up externally, typically though some form of computer bus like USB. Typical examples include joysticks, printers and scanners. Devices such as monitors and disk drives are not considered peripherals because they are not truly optional, and video capture cards are typically not referred to as peripheral because they are internal devices.


List of common peripherals

See Also

External link

  • Peripherals category in dmoz (http://dmoz.org/Computers/Hardware/Peripherals/)

  Results from FactBites:
 
Peripheral Neuropathy Fact Sheet: National Institute of Neurological Disorders and Stroke (NINDS) (4061 words)
Peripheral neuropathy describes damage to the peripheral nervous system, the vast communications network that transmits information from the brain and spinal cord (the central nervous system) to every other part of the body.
Peripheral nerves also send sensory information back to the brain and spinal cord, such as a message that the feet are cold or a finger is burned.
One example of an acquired peripheral neuropathy is trigeminal neuralgia (also known as tic douloureux), in which damage to the trigeminal nerve (the large nerve of the head and face) causes episodic attacks of excruciating, lightning-like pain on one side of the face.
Neuropathy, Peripheral Neuropathy - neurologychannel (558 words)
Peripheral neuropathy is a general term referring to disorders of peripheral nerves.
The peripheral nervous system is made up of the nerves that branch out of the spinal cord to all parts of the body.
Peripheral neuropathy can be broadly categorized by the type of nerve that has been damaged.
  More results at FactBites »


 

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