5. 875 AD. Persian mathematician Muhammed ibn Musa a
Khwarizimi wrote a book outlining the uses of zero as a
number. Developing increasing sophisticated
mathematics.
6. 1300AD. The mechanical age begins with the
widespread use of the Abacus, brought back from China.
7. Early 1600’s. William Oughted invented the slide rule,
forming the basis of the early analogue computer.
8. 1801 - Charles Babbage created the punch card system.
Introduction of binary logic.
9. 1800’s. The dawn of the electromechanical age with the
telegraph and other forms of telecommunications invented.
10. 1940. The dawn of the electronic age begins with valves
used to amplify electronic signals leading to the creation
of the first high speed general purpose computer.