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timeline of calculating machines

-3,000 – abacus 1614 – logarithms – by John Napier 1622 – slide rule invented by Oughtred 1623 – calculating clock by Schickard could add and subtract up to six places 1642 – Pascal built an “arithmetical machine” which used wheels linked by teeth, capable of automatic carrying to the next place 1668 – Morland […]

1232 – Llull – bio

Ramon Llull was born in 1232 in Majorca, now part of Spain. He was a logician, philosopher and theologian. Llull was convinced that it was possible to “compute” truths by creating an “alphabet” to represent basic concepts and then using a mechanical “calculator” to manipulate the symbols and reveal the truth. His calculator was comprised […]