SPEAKERS BUREAU SLIDE SHOW
next letter contained sketches of the machine, and a third
told the sad story of the machine's being destroyed by
fire. No records exist of the events that led Schickard
to build a calculator, although he was familiar with Napier's
logarithms and his bones.
It's hard to tell how successful
his machine would have been because he didn't rebuild
it. But he would have had to overcome the problems that
beset the inventors of the visionary period such as lack
of precision work and over-rotation of the wheels.
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