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George Brown (inventor)
George Brown (1650–1730) was a Scottish arithmetician, and inventor of two incomplete mechanical calculating machines now kept at the National Museum of Scotland. In 1698 he was granted a patent for his mechanical calculating device.
He was minister of Stranraer, schoolmaster in Fordyce, Banffshire, and in 1680 schoolmaster at Kilmaurs, Ayrshire; invented a method of teaching the simple rules of arithmetic, which he explained in his ''Rotula Arithmetica'', 1700. He wrote other arithmetical works; the last of them, ''Arithmetica Infinita'', was endorsed by John Keill.
==References==
*Robert Watt, ''Bibliographia Britannica''
*John Sinclair, ''New Statistical Account of Scotland'', 1845
*Hew Scott, ''Fasti Ecclesiae Scoticanae'', 1868
;Attribution
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