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[[Image:Amstrad light pen.jpg|right|thumb|250px|The LP-1 Lightpen by Amstrad]]
The '''LP-1 ''' is the official [[Amstrad]] lightpen (with software from [[Amsoft]], and hardware from [[Trojan]]). The '''CAD-MASTER''' seems to be the same hardware (but marketed directly by [[Trojan]], and with different Software included).
== Technical ==
