It was Charles Babbage
Jef Raskin
1812
it was an astronomical calculator. A form of mechanical analog computer. The nordon bombsight was also a form of mechanical analog computer.
1972
abacus is the first manual mechanical calculator
Made by Charles Babbage and evloved into a calculator
mechanical mouse
The last famous electromechanical computer was:
abacus
What is Computer
Charles Babbage
Math. The abacus was a basic mechanical adding machine. Pascal is credited with building the first mechanical machine computer in 1642 which was used for calculating sums. In 1939, Stibitz and S.B. Williams built the Complex Number Calculator, the world's first electrical digital computer.