Pascaline (3 h 18 m, 25 oct 1642 año – 5 h 44 m, 30 jun 1644 año)

Descripción:

It was the first calculator or adding machine to be produced in any quantity and actually used. It was invented in 1642. Image: https://www.google.com/imgres?imgurl=https%3A%2F%2Fupload.wikimedia.org%2Fwikipedia%2Fcommons%2Fthumb%2F7%2F78%2FPascaline-CnAM_823-1-IMG_1506-black.jpg%2F1200px-Pascaline-CnAM_823-1-IMG_1506-black.jpg&imgrefurl=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FPascal%2527s_calculator&docid=iAYz6EN1Sr2zJM&tbnid=1Rlk0bL2tCe2GM%3A&vet=10ahUKEwjL49WLr_jWAhVq5IMKHYUlCq8QMwhRKAAwAA..i&w=1200&h=800&safe=active&bih=630&biw=1366&q=pascaline&ved=0ahUKEwjL49WLr_jWAhVq5IMKHYUlCq8QMwhRKAAwAA&iact=mrc&uact=8

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