-
100
First abacus
In 2600 BC, the Chinese invented the fist abacus -
Dec 10, 1500
Leonardo da Vinci
Leonardo da Vinci conceived a cog-wheeled devices -
Wiliam Oughtred
Wiliam Oughtred remained the mathematician's tools. -
Blaise Pascal
Blaise Pascal invented the Pascalina. Pascalina is a meccanical adding machine. -
Gottfried Leibniz
Gottfried Leibniz upon Pascaline by adding multiplication, division and square. -
Model for different engine
The outcome of the scientist's effors was a blueprint for the different engine. The blueprint was a model. -
New devices: Analytical engines
Babbage conceived a new device called Analytical Engine.
This machine was very different on it's predecessors. -
Dr Herman Hollerith
Dr Herman Hollerith developed an electric tabulating system of machines that compiled the consus mechanically.