How 10-key Adding Machines Work How 10-key Adding Machines Work begin-post-stats MechanicalComputing • 11K views end-post-stats begin-duration 8:42 end-duration Math topics: _Integers_##Integers##_0_(number)_##0 (number)##_1_(number)_##1 (number)##_Triangle_##Triangle##_9_(number)_##9 (number) Other topics: _Chinese_inventions_##Chinese inventions##_Crankshaft_##Crankshaft##_Crank_(mechanism)_##Crank (mechanism)##_Escapement_##Escapement##_Office_equipment_##Office equipment##_Adding_machine_##Adding machine##_Punched_tape_##Punched tape##_Calculator_##Calculator video-id: HS3yh-7KB2M channel_MechanicalComputing_ So What Learning Chinese inventions , Integers , Office equipment Monday, January 22, 2018 Share Share
