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April 1973 in New York Martin Cooper.
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The world's first mobile phone was invented in April 1973 by American Martin Cooper.
One day in April 1973, a man stood on the street of New York, pulled out a wireless ** about the size of two bricks, and called it, attracting passers-by to stop and look sideways.
That man was Martin Cooper, the inventor of the mobile phone. At that time, Coopa was an engineer and technician of the famous American company Motorola.
The world's first mobile ** was played against an opponent working at Bell Labs, who was also developing a mobile ** at the time, but it was not yet successful.
Coopa later recalled: "I called him and said, 'Joe, I'm talking to you right now with a portable cellular.'" I heard a 'gnashing of teeth' on the other end of the earpiece—though he had maintained considerable politeness. ”
By April of this year, the mobile phone would have been 30 years old. This product of competition between scientific and technological personnel in those years has now blossomed everywhere, bringing great convenience to our modern life.
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The world's first mobile** was born in 1985. At that time, there was no such term as "mobile phone", because this kind of ** had to be carried and walked like a backpack, so it was called shoulder back**.
One day in April 1973, a man stood on the street of New York, took out a wireless ** about the size of two bricks, and made a call, attracting passers-by to stop **. This person is Martin Cooper, the inventor of the mobile phone. At that time, Coopa was an engineer at Motorola in the United States.
During his time at Motorola, Cooper always had a dream to let people know that wireless communication – especially small mobile phones – is valuable. In addition, he hopes to pique the interest of the Federal Communications Commission in supporting Motorola in the competition with AT&T (AT&T is also a major communications company in the United States).
In fact, the concept of mobile ** appeared as early as the 40s of the 20th century, when Bell Labs, the largest communications company in the United States, took the lead in researching and trial production of mobile**. In 1946, Bell Labs produced the first so-called mobile telecommunications**. However, because of its size, researchers had to put it on a shelf in the lab, and slowly people forgot about it.
It wasn't until the late '60s that AT&T and Motorola became interested in the technology. At the time, AT&T was renting out a bulky mobile wireless** that could reach 10 watts and allow customers to mount it on large trucks. Coopa believes that this kind of ** is too big and heavy, and it is very inconvenient to carry, and it cannot be carried away at all.
As a result, Motorola applied to the Federal Communications Commission of the United States to limit the power of mobile communication equipment, which can only be limited to 1 3 watts.
From the registration of the mobile phone patent in 1973 to 1985, the first modern sense and truly mobile ** was born. This ** placed the power supply and antenna in a box, weighed up to 3 kg, and the user had to carry it on his back like a backpack, so it was called "shoulder carrying**" at the time.
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The inventor of the first mobile phone was Martin Cooper.
Martin Cooper said he was inspired by the TV series Star Trek, "When I saw Captain Cork using a wireless**, I immediately realized that this was what I wanted to invent." ”
At that time, it was in the TV series "Star Trek", and Captain Cork's wireless became the prototype for Coopa and his team to invent the mobile phone. "The task was so urgent that we were asked to make a model of the phone within six weeks. ”
Because at that time, the Federal Communications Commission of the United States was considering whether to allow AT&T to build a mobile network in the American market and provide wireless services; In addition, AT&T has its own plans to develop mobile**. Motorola is reluctant to let a great opportunity slip away. Three months later, the first mobile phone model was completed.
Martin. Coopa told an interesting story about the invention of the mobile phone. "The shape of the first mobile phone was actually the result of a competition between five industrial design groups, but the simplest of them all was chosen (its basic design was popular for almost 15 years).
The original design was very small, except that the electronic system engineers had to cram hundreds of parts into it, and the final phone was five times larger and much heavier than the original design.
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