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mobile phones in schools. Students have been ... everyone'. Rules, such as the
ban on mobile phones, benefit everyone. Daniel Juniper ...
Benefits And Problems Of Mobile Phones. The advent of mobile phones has squeezed
this large world and brought it into the palm of human being. ...
"Students should not be allowed to Bring Mobile Phones to School". In recent times,
the number of people owning mobile phones has increased dramatically. ...
How Safe Are Mobile Phones? ... This is where science fails us. The problem is that mobile
phones are still too new to know the long-term effects on human. ...
Do Mobile Phones pose a serious threat to people's health? ... By using mobile phones
are we damaging our long-term health just to stay in contact with people? ...
Submitted by hallenrm on June 20, 2005
Category: Technology
Words: 2753 | Pages: 12
Views: 339
Popularity Rank: 30,905
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The Mobile Revolution
Rakesh Mohan Hallen
By March 2004 the total number of cell phone users in India exceeded 3 crores. Experts call it a mobile revolution. People from all walks of life, of all ages use them. They carry it in their hands, pockets or purses. One can find advertisements related to cell phones anywhere: roads, newspapers, and television. Theoretically one can contact a person carrying a mobile (cell phone) anywhere, anytime.
But few are aware of the technology that makes it possible. It is not very difficult to become aware of its nitty-gritties.
How it works
To use a cell phone one needs a handset. The handset of a cell phone, as you might have seen, has a small screen at one end and a panel of buttons below it. Some handsets have a small antenna that is protruding out from its, but it is not universal. Some modern handsets are foldable so that when not in use the panel of buttons is not visible, these handsets have a larger screen that can display colour pictures also.
The essential component of the technology that make cell phone possible are networks of a large number of radio transmitters/receivers. Each cell phone company has a network of this kind that is controlled in each city/state by its central office known as MTSO (Mobile Telephone Switching Office) . You know that our body is made up of many cells. These networks are also cellular akin to the body of any animal. The area covered by a cell phone company, a city or a state, for its services is divided into zones that are called its cells. Thus the network of a cellular company is made up of many such cells. Each of these cells has a moderately sized radio transmitter/receiver and a microprocessor based instrument somewhat like a computer, located at a place known as its base station. Base stations can communicate with each other. They can easily located in a town/city because of the prominent...
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