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How Much Does the Light Pen Cost?

Answer

A light pen works by sensing the sudden small changes in brightness of a point on the screen when an electron gun refreshes that spot. A light pen can cost up to $ 75.
Q&A Related to "How Much Does the Light Pen Cost"
Similar to a mouse, light pens use senors to detect objects on a screen. Unlike a mouse, Light Pens gives the user more control especially in drawing applications.
http://answers.ask.com/Computers/Hardware/what_is_...
UV light pens are used to read invisible ink. This is one reason why UV light pens are considered a defense weapon and are used by spies and police officers. People can mark their
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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 CRT TV set or monitor. It allows the user to point to displayed
http://wiki.answers.com/Q/What_is_a_light_pen
n. A small, photosensitive device connected to a computer and moved by hand over an output display in order to manipulate information in the computer.
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