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  • | title = [[Data storage|Physical]] [[audio recording format]]s | group3 = [[Friction|Grooved]] [[Disk storage|disc]]
    7 KB (710 words) - 16:33, 16 December 2018
  • ...r the disk; and any signals given through the magnets were embossed on the disk of paper. If this disc was removed from the machine and put on a similar ma "Instead of using a disk I designed a little machine using a [[Phonograph cylinder|cylinder]] provid
    115 KB (17,286 words) - 16:32, 16 December 2018