2. There are 82 remaining fragments of the mechanism that contain a total of 30 gears. The largest piece contains 27 of the gears. (Image copyright of the Antikythera Mechanism Research Project) 100-150 BC The Antikythera Mechanism, discovered more than 100 years ago in a Roman shipwreck, was used by ancient Greeks to display astronomical cycles.

3. Arabic Numerals: Invented around 600AD Introduced to Europe around 1200AD (Greatly facilitate computations)

4. 1492 Leonardo Da Vinci describes the flying machine in his notebooks.

5. 1435 The Gutenberg Bible, (Also known as the 42-line bible, or the Mazarin Bible) is the first book printed on a printing press with movable type.

6. 1609 Galileo Galilei builds the optical refracting telescope.

7. 1623 Wilhelm Schickand engineers the mechanical calculator, which can add, subtract, multiply, and divide.

8. 1712 Thomas Newcomer makes the 1 st commercially available steam engine.

9. 1735 Carolus Linneas proposes taxonomic system for naming species. Humans get a new name: Homo Sapiens.

10. 1822 Mathematician Charles Babbage conceives Difference Engine No.1 (Considered the first mechanical computer) 1840 Ada Lovelace, assistant to Babbage, conceives the first programming language for his computer.

11. 1859 Charles Darwin publishes On the Origin of Species .

12. 1876 Alexander Graham Bell patents the telephone

13. 1877 Thomas Edison perfects carbon-thread incandescent light bulbs (reconstruction)

14. 1881 Nicola Tesla, electrical engineer and physicist, discovers principles of alternating current, invented numerous devices and procedures that were seminal to development of radio and harnessing electricity. (Pictured: Tesla Coil)

15. E=mc 2 1905 Albert Einstein publishes special theory of relativity, stating the equivalence of matter and energy in the now famous equation (above).

16. Clifford Berry with the Atanasoff-Berry Computer 1939 John Atanasoff and Clifford Berry complete prototyep of digital computer: it’s able to store data and do addition and subtraction using binary code.

17. 1946 Electronic Numerical Integrator and Computer (ENIAC) one of the world’s 1 st electronic computers, delivered to the US Army.

18. 1957 Sputnik I, first man-made satellite, goes up, Laika the dog, first living creature in space, flies aboard Sputnick II.

19. 1969 Neil Armstrong walks on the moon.

20. Arpanet, precursor to the Internet, officially commissioned.

21. 1976 Apple Computer developed by Steven Jobs and Stephen Wozniak.

22. 1984 William Gibson coins the term “cyberspace” in his novel “Necromancer.”

23. 1989 Tim Berners-Lee invents the World Wide Web while working at CERN, the European Particle Physics lab.

24. 1998 Larry Page and Sergey Brin found Google.