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"IMHO, having students do computer games projects is absolutely the best possible way to teach programming, graphics, software engineering, object oriented programming, etc."
- Rudy Rucker

Visiphone  
  Visual as well as audio communication.  

Then, as she sat upon a bench, recovering her strength, he flipped on the lifeboat's visiphone projector and shot its invisible beam up into the control room, where he saw space-armored figures furiously busy at the panels.
From Triplanetary, by E.E. 'Doc' Smith.
Published by Not known in 1934
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