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A light pen is a computer input device in the form of a light-sensitive wand used in conjunction with a computer's cathode-ray tube (CRT) display. It allows the user to point to displayed objects or draw on the screen in a similar way to a touchscreen but with greater positional accuracy.
The first light pen was created around 1952 as part of the Whirlwind project at MIT. Because the user was required to hold his/her arm in front of the screen for long periods of time, the light pen fell out of use as a general purpose input device. Nevertheless, modern touch screens on desktop computers require similar ergonomic behaviour from ...
This type of pen is used in conjunction with a graphics tablet, tablet computer, smartphone or digital notebook. The input device captures the handwriting data, that, once digitized, can be displayed on a screen. Common digital pen protocols are: Microsoft Pen Protocol (MPP) (formerly N-trig) Wacom AES 1.0 and 2.0; Wacom EMR
A light pen is a device similar to a touch screen, but uses a special light-sensitive pen instead of the finger, which allows for more accurate screen input. As the tip of the light pen makes contact with the screen, it sends a signal back to the computer containing the coordinates of the pixels at that point.
A common computer input device, a keyboard. A user presses a key which transfers information to a computer. 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.
In computing, a stylus (or stylus pen) is a small pen-shaped instrument whose tip position on a computer monitor can be detected. It is used to draw, or make selections by tapping. It is used to draw, or make selections by tapping.
Pen computing refers to any computer user-interface using a pen or stylus and tablet, over input devices such as a keyboard or a mouse.. Historically, pen computing (defined as a computer system employing a user-interface using a pointing device plus handwriting recognition as the primary means for interactive user input) predates the use of a mouse and graphical display by at least two ...
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.
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