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1450

1450. Johann Gutenberg invents a printing press using movable metal type. 1609. Early newspapers are published in Germany. 1792. Mechanical semaphore is invented in France. 1830.

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1450

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  1. 1450 • Johann Gutenberg invents a printing press using movable metal type.

  2. 1609 • Early newspapers are published in Germany.

  3. 1792 • Mechanical semaphore is invented in France.

  4. 1830 • Ada Bryon a mathematician writes the words first computer program for a computing machine designed by Charles Babbage, but never built.

  5. 1837 • Samuel Morse invents a telegraph that can send short and long beeps, called “dots” and “dashes”.

  6. 1866 • First successful transmissions over a transatlantic cable.

  7. 1876 • Alexander Graham Bell invents the telephone, transmitting the sound of the voice clearly over electrical wires.

  8. 1877 • Thomas Edison invents the phonograph, a device to record sound on a wax cylinder.

  9. 1884 • First long distance phone calls are made.

  10. 1901 • Gugliermo Marconi sends the first radio signal across the Atlantic Ocean.

  11. 1924 • Pictures are first transmitted over telephone lines.

  12. 1928 • Very first few homes get television sets to watch broadcast programs.

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