Mobile or cellular phone
The first record is about the mobile phone company Motorola DynaTAC 8000X with your model. The model was designed by engineer Rudy Krolopp Motorola in 1983. The model weighed just under a kilo and was worth nearly U.S. $ 4000. Krolopp then the team will incorporate research and development led by Martin Cooper Motorola. Both Cooper and Krolopp appear as owners of the original patent. From the DynaTAC 8000X, Motorola would develop new models like the Motorola MicroTAC, launched in 1989 and the Motorola StarTAC, released in 1996 to market.Currently have major mobile touch phones, following the wake of the iPhone.
FuncionamientoLa telephone communication is made possible by the interconnection between mobile stations and public.According to the bands or frequencies which operates the mobile, can operate in one part or another of the world.Mobile telephony is a combination of a network of transmitting stations, receiving stations (repeaters, base stations or BTS) and a series of telephone switching 1st and 5th level (MSC and BSC, respectively), which enables communication between portable telephone terminals (mobile phones) or between mobile terminals and fixed network phones traditional.
In operation the mobile phone communicates with a base station, and as you move, the computer systems that manage the network are changing the call to the next base station, transparently to the user. That's why it is said that the base stations form a network of cells, which honeycomb, each base station serving the mobile devices that are in his cell.