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In computing, an input device is a piece of equipment used to provide data and control signals to an information processing system, such as a computer or information appliance. Examples of input devices include keyboards, computer mice, scanners, cameras, joysticks, and microphones. Input devices can be categorized based on:
Devices for communication between computers, such as modems and network cards, typically perform both input and output operations. Any interaction with the system by an interactor is an input and the reaction the system responds is called the output. The designation of a device as either input or output depends on perspective.
Some devices also support S-Video, which shares the same pins as composite video and RGB. YP B P R is also sometimes supported as a non-standard extension via the RGB pins. D-Terminal: Popular in Japan for analog high definition video. Available resolutions are specified as D1 through D5. PDMI: Advent Vega; Dell Streak; Boeing Black
A graphic tablet. A graphics tablet (also known as a digitizer, digital graphic tablet, pen tablet, drawing tablet, external drawing pad or digital art board) is a computer input device that enables a user to hand draw or paint images, animations and graphics, with a special pen-like stylus, similar to the way a person draws pictures with a pencil and paper by hand.
Tablets are portable computers that use a touch screen as the primary input device. Tablets generally weigh less and are smaller than laptops. [citation needed] Some tablets include fold-out keyboards or offer connections to separate external keyboards. Some models of laptop computers have a detachable keyboard, which allows the system to be ...
Such devices can use an external power supply, which is allowed by the standard, or use a dual-input USB cable, one input of which is for power and data transfer, the other solely for power, which makes the device a non-standard USB device. Some USB ports and external hubs can, in practice, supply more power to USB devices than required by the ...
A computer keyboard is a peripheral input device modeled after the typewriter keyboard [1] [2] which uses an arrangement of buttons or keys to act as mechanical levers or electronic switches. Replacing early punched cards and paper tape technology, interaction via teleprinter -style keyboards have been the main input method for computers since ...
Pointing-device text input (2 C, 13 P) S. Surface computing (12 P) T. Touchscreens (5 C, 16 P) W. Webcams (2 C, 31 P) Pages in category "Computing input devices"