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Uploaded on Jan 7, 2010
From the BBC Archive 'Tomorrow's World' collection: http://www.bbc.co.uk/archive/tomorrow... The computer 'light-pen' is put through its paces. In this report, Lyall Watson investigates the computer interface of the future a 'light-pen' that can draw directly onto a phosphorescent computer screen. The device, developed by Elliots, will be of immense benefit to industrial design.