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A mobile phone (or cellphone) 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).
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.
What is GSM? At the dawn of the 1980s, engineers raced to build a cellular phone network from scratch, changing the way we communicate forever. Star Trek communicator toy, 1994–1996. Science Museum Group Collection Image source.
History of mobile phones. A man talks on his mobile phone while standing near a conventional telephone box, which stands empty. Enabling technology for mobile phones was first developed in the 1940s but it was not until the mid-1980s that they became widely available.
With encouragement from his boss, Motorola’s chief of portable communication products, John Mitchell, Cooper, and the engineers at Motorola produced the working prototype for the first cell phone.
20 de mar. de 2024 · The first phone went on sale for nearly $4,000 in 1983. Here's a brief history of the cell phone industry and how it has evolved over time.
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...
