A difference engine is an automatic mechanical calculator designed to tabulate polynomial functions. The name derives from the method of divided differences, a way to interpolate or tabulate functions by using a small set of polynomial coefficients. Both logarithmic and trigonometric functions, functions commonly used by both navigators and scient...
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http://en.wikipedia.org/wiki/Difference_engine
(from the article `computer`) Charles Babbage was an English mathematician and inventor: he invented the cowcatcher, reformed the British postal system, and was a pioneer in the ...
Found on
http://www.britannica.com/eb/a-z/d/47
Mechanical calculating machine designed (and partly built in 1822) by the English mathematician Charles Babbage to produce reliable tables of life expectancy. A precursor of the analytical engine, it was to calculate mathematical functions by solving the differences between values given to variables within equations. Babbage designed the calculator...
Found on
https://www.encyclo.co.uk/local/21221
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