IBM Selectric Typewriter and its mechanical digital to analogue converter [video] (youtube.com) 4 points by pbtflakes 9y ago ↗ HN
[–] pbtflakes 9y ago ↗ The appendix to this video [0] goes into the specific operation of the Whiffletree mechanism.[0] https://www.youtube.com/watch?v=G_SC7oWL78A
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[ 3.0 ms ] story [ 11.1 ms ] thread[0] https://www.youtube.com/watch?v=G_SC7oWL78A