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THE IDEA
Alexander Graham Bell had the idea of a device that could act like a multiple telegraph. As the invention had progressed, he and Thomas Watson, an electrician, were debating about a device that could send human voice by using electricity. -
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RESOURCES
Ganapaty, Priya. DEC. 23, 1947: TRANSISTOR OPENS DOOR TO DIGITAL FUTURE. 23 December 2009. Wired. 7 December 2018.
https://www.wired.com/2009/12/1223shockley-bardeen-brattain-transistor/ Morris, Jason. History of the Telephone. ITPA. 7 December 2018.
http://www.nationalitpa.com/history-of-telephone -
FIRST TELEPHONE
Finally A. Graham Bell could present its new device to the world. He tested it by phoning Thomas Watson, who was in another room, and spoke to him. Both invented the device that changed the course of time. -
NUMBERS INSTEAD OF NAMES
By this year, Alexander Graham Bell decided that, for higher comfort, each person that had a telephone will phone each other by typing their determinated number, no its name, like before. -
THE TELEPHONE CROSSES THE OCEAN
In 1927, New Yorkers could phone people who were living in London. This incredible fact was possible due to radio waves that transmitted the signal between New York and London. There were people who booked calls for that hystorical day, these people could also phone the people who were on the other side of the ocean. -
THE TRANSISTOR
The transistor was invented in 1947, this machine could take electrical signals and amplify or switch them. It replaced the vacuum tube, which consumed a lot of power and was unreliable. Because of that, the transistor was so much better than the vacuum tube. -
NOWADAYS
Nowadays telephones have evolved into cell phones, a smaller device that can do wahtever you want, from making a call to take some photos. It is good to enjoy the present, but people have to remember the past to build the future.
