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Photo of the Hypertext Editing System (HES) console in use at Brown University, circa October 1969. The photo shows HES on an IBM 2250 Mod 4 display station, including lightpen and programmed function keyboard, channel coupled to Brown's IBM 360 mainframe.
A light pen is a computer input device in the form of a light-sensitive wand used in conjunction with a cathode-ray tube (CRT) display.
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Massachusetts Institute of Technology
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Serial ATA
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Hercules Graphics Card
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Academy of Media Arts Cologne
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computer
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International Standard Book Number
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computer mouse
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hard disk
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computer keyboard
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computer hardware
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central processing unit
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calligraphy
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pen
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printer
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compact disc
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microphone
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random-access memory
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ink
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computer monitor
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DVD
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