Estudiante

Oral Speech
Trends through Time
Options:
* Trends of fashion
* Trends of cell phones
* Trends of videogame
Trends of mobile phones
Mobile Phones: More than communication
The cellphone simply born and developed from the need of human beings to communicate. His successor were telegraph or morse, and now a days is the “competition” for many other kinds of technology as tv, radios,and the traditional phone service.
The need became vital during the Second World War to the Allied soldiers and their opponents who were on the battlefield. Saving lives or communicate a militarystrategy at some point, were two of several factors that led to the creation of a system of transmission and a receptocion called handie in the last century. within a limited distance about 3 km (1.86miles) between a device and another, while today's mobile phones are powered by networks and stations with huge geographical area to achieve communication.
Point "G": from 1 to 4
This system ofconnect mobile phone has been expanded and developed with the technological evolution of mobile phones themselves, a process that is identified by generations according to the progress that is beingintroduced. Until now count four:
1G-similar networks
* The first generation emerged in the late seventies and early eighties of last century.
* This technology is characterized by being analogand only for voice,
* use of multiple cells and the ability to transfer calls from one location to another while the user traveled during the conversation
* The dominant technology of thisgeneration was the Advanced Mobile Phone Systemwhich was used with greater force in the United States.
2G-digital Globalization:
* Unlike the previous, second generation in the whole process isdigital.
* In the second generation also had advanced mobile phones with smaller dimensions, which were connected quickly to the network signal.
* During this period, no doubt, the motive had...