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Techmoan: Season 2020

2020x58 Talking Pictures: 3M Sound on Slide multimedia system from 1969

  • 2020-12-26T06:30:00Z on YouTube
  • 17m
  • United Kingdom
  • English
  • Documentary
The 3M Sound On Slide system was launched in 1969 and enabled anyone to assemble and play multimedia presentations with each photo accompanied by 30 seconds of audio.
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