1. Leonardo Cordova

2. 1990  Tim Berners-lee invents the world wide web. Tim Berners-lee

3. 1924  Ure are Pictfirst transmitted over telephone linesPictfirst transmitted

4. 1877  Thomas Edison invents the phonograph, a device to record sound on a wax cylinder Thomas Edison invents

5. 1982  The first cell phones are available for sale The first cell phones

6. 1975  The personal computer, both small and powerful is invented The personal computer

7. 450  Chinese invent printing by inking carved wood blocks Chinese invent printing

8. 105  Chinese make paper from rags Chinese make paper

9. 1609  Early newspapers are published in germany Early newspapers

10. 1866  First successful transmissions over a transatlantic candle. First successful

11. 1979  The first emoticon is used in an e-mail messagefirst emoticon

12. 1792  Mechanical Semaphore is invented in France. Mechanical

13. 1993  Marc Andreeson creates the first browser program, allowing people to navigate the Web. Marc Andreeson

14. 1450  Johann Gutenberg invents a printing press using movable metal type. Johann Gutenberg

15. 3500BC  Sumerians record pictographs representing words on clay tablets Sumerians

16. 1963  First communications satellite is launched, allowing worldwide live broadcast of the 1964 Olympics First communications

17. 1972  The first E-mail messages are sent The first E-mail

18. 45,000 BC  Neanderthal man carves a picture on a woolly mammoth tooth. Neanderthal man

19. 900 BC  Chinese develop postal system to deliver written messages Chinese develop

20. 1830s  Ada Byron, a mathematician, writes the world’s first computer program for a computing machine designed by Charles Babbage, but never buil Ada Byron, a mathematician