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File:Olympia CD700 Desktop Calculator. 1971. Nixie Tube Displays Power On.jpg

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English: Olympia CD700 Desktop Calculator (1971) The glass tube contains a wire-mesh anode and multiple cathodes, shaped like numerals.The tube is filled with a gas at low pressure, usually mostly neon and each cathode can be made to glow in the characteristic neon red-orange color.
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Author Mister rf
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current14:04, 29 January 2016Thumbnail for version as of 14:04, 29 January 20162,400 × 900 (1.13 MB)Mister rf (talk | contribs)User created page with UploadWizard

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