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 LIGHT PEN Definition
We define LIGHT PEN |
LIGHT PEN - A pen-like device that is sensitive to light. More specifically, it is sensitive to the electron gun of a CRT monitor hitting it. Based on when the electron gun hits the light pen, a computer can determine where on a CRT screen the light pen is positioned. Thus, light pens can be used to "draw" on CRT screens, or can be used just like mice or other pointing devices. |
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