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telegraph
David Alter invented the first known American electric telegraph, in Elderton, Pennsylvania, a year before Samuel Morse's telegraph. -
Telephone
Alexander Graham Bell was considered the inventor of the telephone because he was the first to patent -
Radio
Ikola Tesla and Guglielmo Marconi have been fighting for this recognition since the end of the 19th century. Many consider Nikola Tesla (1856-1943) the true inventor of the radio, although it was Guglielmo Marconi (1874-1937) who filed the patent in 1904. -
Television
Television was invented by John Logie Baird in 1923 in Hastings, England, and the first television picture was broadcast by Baird in 1926. -
computer
Konrad Zuse was the first to build a working computer. He did it in the living room of his parents' house in Berlin. -
Tablet
Alan Kay was the first to propose something very similar to a tablet in 1968. Apple popularized them with the famous iPad -
mobile phone
The first mobile phone weighed more than two kilos. Martin Cooper may not be a famous name, but his invention is known to more than half of the world's population who own a cell phone.
