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1925 BCE
Television ( TV )
- March 25, 1925: John Logie Baird, a Scottish inventor, gave the first public demonstration of a mechanical television system using a spinning Nipkow disk. This system could transmit moving silhouette images, though the quality was very crude.
- September 7, 1927: Philo Farnsworth, an American inventor, successfully demonstrated the first fully electronic television system using a cathode ray tube (CRT). This system transmitted a simple image of a dollar sign.
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1901 BCE
Radio
December 12, 1901 radio was created. -
1440 BCE
Printing Press
- Printing Press (15th century): Johannes Gutenberg's invention of the printing press revolutionized mass communication by making books and printed materials more widely available. This invention led to a significant increase in literacy rates