Blaise Pascal and Wilhelm Schickard one of those
The first adding calculator machine was invented by Blaise Pascal.
Jhon Shepherd Barron
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It was Blaise Pascal that invented the adding machine in 1642. He invented this machine to help ease the burdens of his father who worked as a clerk at the time.
Leonardo da Vinci. Experts mean the sketch does not really show an adding machine, but a ratio machine.
Blaise Pascal and Wilhelm Schickard one of those
The adding machine is actually a calculator. but in the mid 1642's it was called an adding machine. it was used to help with mathimatics
Cavemen, the wheel.
Hiram Maxim
Hiram Maxim
Alexander Bain
christopher solis
Hiram Maxim
An adding machine is a mechanical or electromechanical calculator which could perform addition and subtraction.
pascal
There is no inventor of the time machine because no working machine exists and the ability to travel through time is only a theory. The only time machine people know about is the one in the book from H.G. Wells.