Thursday, April 30, 2015

In the early 90s began the takeoff of mobile phones, with the digitization of networks (GSM) and de


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Martin Cooper, the first cell phone Motorola Adventure mobile began immediately after the Second World War, with the first attempts of Swedes, Finns and Americans. But as registrar of birth is considered the act of April 3, 1973. It was a hazy spring morning in New York. Dr Martin Cooper of Motorola, walking in a street of the American megalopolis knew that wrote history. In both hands clutching a device that looked like a portable radio. It had height 25 cm and weight of 900 grams. It was the first modern mobile phone with MotorolaDynaTAC code. Formed a number of key rival, Joel Engel, who was working on behalf of Bell Labs. "Hey Joe, I'm talking of a real mobile phone," she said. "Although we had the best of relationships, I behaved very politely," said years later Cooper in an interview. The Bell took the rematch in 1978, making the first test mobile network, which was necessary for the development and commercialization of mobile. The first automatic mobile network operated in the early 80s in Scandinavia. By the end of the 80 mobile phones were bulky to be carried in the pocket so they were mainly installed in cars. The first cell received approval permission was the model of Motorola DynaTAC8000X. It was the flagship of the so called first generation mobile (1G).
In the early 90s began the takeoff of mobile phones, with the digitization of networks (GSM) and devices. Mobile were smaller rima abab (100-200 grams), could fit in the palm and entered albeit with difficulty in his pocket the user. We spent so mobile second generation (2G), provided other facilities like sending short text messages rima abab (SMS) and taking pictures. rima abab In the early 21st aio

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