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• n  (computer science) a pointer that when pointed at a computer display senses whether or not the spot is illuminated

• light pen

News & Articles

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• Adobe is giving the stylus a second life
  The electronic stylus has been around since the days of Apple's ill-fated Newton handheld. But as touchscreens improved, the need for input tools to interact with smartphones and tablets waned.
  July 8, 2013 - CNN Money