Pascal’s, Leibniz’s, And Morland’s equipment had been curiosities, but with the economic Revolution with the 18th century came a widespread must carry out repetitive operations competently. With other things to do becoming mechanized, why not calculation? In 1820 Charles Xavier Thomas de Colmar of France correctly fulfilled this challenge when https://maps.app.goo.gl/UmD5JM5ww6NgkMzV9