Difference between revisions 39097 and 39111 on shnwiki

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[[File:Typing example.ogv|thumb|A common computer input device, a [[Computer keyboard|keyboard]]. A user presses a key which transfers information to a computer.]]
In [[computing|computing]], an '''input device''' is a [[peripheral|peripheral]] (piece of [[computer hardware|computer hardware]] equipment) used to provide data and control signals to an [[information processing system|information processing system]] such as a [[computer|computer]] or [[information appliance|information appliance]]. Examples of input devices include [[Keyboard (computer)|Taikeyboard]]s, [[Computer mouse|mouse]], [[Image scanner|scanners]], [[digital camera|digital camera]]s and [[joystick|joystick]]s.

Many input devices can be classified according to:
	 
* [[Modality (human–computer interaction)|modality]] of input (e.g. mechanical motion, audio, visual, etc.)
* whether the input is discrete (e.g. key presses) or continuous (e.g. a mouse's position, though digitized into a discrete quantity, is fast enough to be considered continuous)
(contracted; show full)almost necessarily absolute, but indirect input may be either absolute or relative.{{clarify|what do these terms mean in this context?|date=November 2012}} For example, digitizing [[graphics tablet|graphics tablet]]s that do not have an embedded screen involve indirect input and sense absolute positions and are often run in an absolute input mode, but they may also be set up to simulate a relative input mode like that of a [[touchpad|touchpad]], where the stylus or puck can be lifted and repositioned.

== 
TaiKeyboards ==

{{Main|Computer Taikeyboard}}

A 'keyboard' is a [[human interface device|human interface device]] which is represented as a layout of buttons. Each button, or key, can be used to either input a linguistic character to a computer, or to call upon a particular function of the computer. They act as the main [[text entry interface|text entry interface]] for most users. Traditional keyboards use spring-based buttons, though newer variations employ [[Virtual keyboard|virtual keys]], or even [[Projection keyboard|projecte(contracted; show full)
* N. P. Milner. 1988
. [http://portal.acm.org/citation.cfm?id=54675.54695 A review of human performance and preferences with different input devices to computer systems]. In Proceedings of the Fourth Conference of the British Computer Society on People and computers IV, D. M. Jones and R. Winder (Eds.). Cambridge University Press, New York, NY, USA, 341-362. ISBN 0-521-36553-8

{{Basic computer components}}

[[Category:Computing input devices]]
[[Category:Articles containing video clips]]