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  uses an electron gun, first cathode ray telivision was in 1934
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  first monitor was in the 1970s but the first display from liquid crystals created was between 1964 and 1968.
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  pencept
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  Created by IBM
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  Cheaper alternative to floopy drives but often had the click of death, came in 100mb, 250mb and eventually 750mb sizes. to store a 5.47 TB worth of information and taking into account the 1.6mm thickness of each disk it would be taller than the eiffel tower.