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calculator![]() In 1617 Scottish mathematician John Napier published his description of what was arguably the first mechanical calculator – a set of numbered rods, usually made of bone or ivory and therefore known as Napier's bones. Using them, multiplication became merely a process of reading off the appropriate figures and making simple additions.
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An extensible, advanced desk calculator and mathematical tool written in Emacs Lisp by Dave Gillespie <daveg@synaptics. An extensible, advanced desk calculator and mathematical tool written in Emacs Lisp by Dave Gillespie <daveg@synaptics. At an average of 50 sales a month, an extra $500 tacked onto client's bill adds up to $25,000, Weintraub said, punching numbers into a desk calculator. |
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