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7 de may. de 2024 · Martin Cooper, American engineer who led the team that in 1972–73 built the first mobile cell phone, the DynaTAC (Dynamic Adaptive Total Area Coverage), and made the first cell phone call, on April 3, 1973. He is widely regarded as the father of the cellular phone.
- William Hayward Pickering
William Hayward Pickering (born December 24, 1910,...
- Ernst F.W. Alexanderson
Ernst F.W. Alexanderson (born Jan. 25, 1878, Uppsala,...
- John Mauchly
John Mauchly (born August 30, 1907, Cincinnati, Ohio,...
- Martin Cooper
(born 1928). American engineer Martin Cooper is widely...
- William Hayward Pickering
A mobile phone (or cellphone [a]) is a portable telephone that can make and receive calls over a radio frequency link while the user is moving within a telephone service area, as opposed to a fixed-location phone ( landline phone ).
[1] The history of mobile phones covers mobile communication devices that connect wirelessly to the public switched telephone network. While the transmission of speech by signal has a long history, the first devices that were wireless, mobile, and also capable of connecting to the standard telephone network are much more recent.
3 de abr. de 2023 · While demonstrated in 1973, it would be another decade of development before Motorola’s cell phone — the world’s first — made it to market, and commercial cellular service for handheld ...
3 de abr. de 2023 · Innovation | April 3, 2023. From ‘the Brick’ to the iPhone, the Cellphone Celebrates 50 Years. As the technology turns 50, science fiction might hint at the cellphone’s next chapter. Engineer...
20 de mar. de 2024 · Calvin Wankhede. •. March 20, 2024. In just a few decades, mobile phones have gone from a luxury reserved for the elite to an essential tool for billions of users. From the first in-car phones of...
25 de jul. de 2018 · The first phone weighed over two pounds. The first call from a cell phone was made in 1973. Wikimedia COmmons. In 1973, the first call from a hand-held device was made with a phone shaped like a ...
