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July 2, 2012 10:00 pm PDT
Original Link: http://feeds.boingboing.net/~r/boingboing/iBag/~3/tl3BjJMppko/how-the-selectrics-digital-t.html
How the Selectric's digital-to-analogue converter worked
This great video explainer shows the inner workings of a digital-to-analogue converter, using the IBM Selectric's early example of the form to illustrate the mechanism: Using slow motion video Bill Hammack, the engineer guy, shows how IBM's revolutionary "golf ball" typewriter works. He describes the marvelous completely mechanical digital-to-analogue converter that translates the discrete impulse [...]Original Link: http://feeds.boingboing.net/~r/boingboing/iBag/~3/tl3BjJMppko/how-the-selectrics-digital-t.html
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