Davinci's Mechanical Calculator

• Davinci's mechanical calculator was originally developed around 1502.
• Davinci's mechanical calculator did not have a huge impact on the tech world because it was discovered later in the 1900s. His computer worked by using a series of Gears with 10:1 ratios in each of its 13 gears which when a dial was turned it could perform calculations. The calculator made calculations by using 13 rotating wheels.
• Davinci's mechanical calculator had no influence over the further development of the mechanical calculating devices. However, it was influenced by a hodometer.
• Leonardo da Vinci invented his mechanical calculator.
• Interesting Fact: Some objectors claimed that Leonardo's drawing was not of a calculator, but actually represented a ratio machine.