The Whiffletree A mechanical digital-to-analog converter
engineerguy
Published
11/09/2010
Early calculating devices and computers used mechanical digital to
analogue converters. This video describes one based on an arrangement
of metal bars called a "whiffletree" - also sometimes called a
"whippletree." It shows, briefly, the whiffletree used in IBM's
revolutionary selectric typewriter and then illustrates the principles
of a whiffletre
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