| 41. | Only three peripherals were released by Microdigital & mdash; a Joystick, a light pen interface and a parallel printer interface.
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| 42. | The H�misph�re is a light pen that has a cigar shaped barrel with a beveled top and usual Waterman clip.
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| 43. | The first light gun of this type was used on the MIT Whirlwind computer, which used a similar light pen.
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| 44. | The MIS system used a light pen to allow physicians and nurses to quickly point and click items to be ordered.
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| 45. | Light pen usage was expanded in the early 1980s to personal computers such as the Fairlight CMI, and the BBC Micro.
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| 46. | Terminals provided data entry capability into mainframes as well as light pen pointing and selection before the mouse was in use.
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| 47. | Using a light pen, Sketchpad allowed one to draw simple shapes on the computer screen, save them and even recall them later.
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| 48. | And they can use a " light pen " to highlight a paragraph or phrase the way television commentators analyze football plays.
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| 49. | In the early 1980s, Gibson was best known for his work on light pen technology for use with Apple and Atari systems.
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| 50. | The right monitor, which played the preview video, was used by the editor to make cuts and edit decisions using a light pen.
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