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xcv: Colossus transitor lamp
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xcv: Enigma rotor
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xcv: Enigma cipher
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xcv: Turing bombe detail
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xcv: Apple II
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xcv: Turing bombe detail
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xcv: Turing bombe detail
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xcv: Super-brain computer
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xcv: ZX81
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xcv: Video Camera
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xcv: Plane at bleychley park