-
2300 BCE
Abacus
The abacus, also called a counting frame, is a calculating tool that was in use in the ancient Near East, Europe, China, and Russia, centuries before the adoption of the written Arabic numeral system. -
The Neperian Ábacus
Napier's abacus is an abacus invented by John Napier who published the description of it in a work printed in Edinburgh in late 1617 entitled Rhabdologia. By this method, the products are reduced to addition operations and the quotients to subtractions; As with the tables of logarithms, invented by himself, the powers are transformed into products and the roots into divisions. -
The Pascalina
The pascaline was the first calculator that worked on wheels and gears, invented in 1642 by the French philosopher and mathematician Blaise Pascal (1623-1662). The first name he gave to his invention was 'arithmetic machine'. Then he called «pascaline wheel», and finally «pascaline». This invention is the remote ancestor of today's computer
You are not authorized to access this page.