The invention of the computer, apart from what anybody has told you, started around 2000 years ago. The computer started out as an abacus. An abacus is a rack made of wood with two wires running parallel to each other. On the wires there are beads. By moving the beads anyone can solve simple math problems. Next, there was the Astrolabe, used for navigating.
The first digital computer was invented in 1642 by Blaise Pascal. It consisted of numbers entered in dials but, it could only add. However in 1671 a computer was invented that was eventually was built in 1694. The man to credit for this invention is Gottfried Wilhelm von Leibniz. Unlike Pascal’s Leibniz’s could add and multiply. Leibniz also invented the stepped gear mechanism for the addend digit introduction, and to this day is still being used.