EntityQ211586· pop 35· linked from 209 articlesmechanical calculatorSign in to savemechanical machine for arithmetic operations for absolute calculatorsConnectionsslide ruleEntityPascal's calculatorEntitycomputerEntitycalculatorEntitymainframe computerEntityNapier's bonesEntityAddiatorEntityStepped ReckonerEntityViennaEntitySaint PetersburgCityYouTubeConceptGottfried Wilhelm LeibnizEntityBlaise PascalEntityarithmeticEntityJohannes KeplerEntityclockEntityInternational Standard Book NumberEntityWikisourceEntityAda LovelaceEntitymultiplicationEntityCategories17th-century inventionsCleanup tagged articles with a reason field from December 2022Mathematical toolsMechanical calculatorsOffice equipment