Cell phones are so called because the physical area basically covering are a formatted cells. The origin of the cell phone is said that was way back in 1973 when the electronics company consumer Motorola launched the first portable cell phone, which was marketed under the name of Motorola DynaTAC 8000X.
Currently, the number of cell phone models entering the market is almost incalculable, and its sales generates hundreds of billions of dollars a year, so today is considered as the most used electronic device in the world.
As we can see in any city or town, it is almost impossible to find a person without a cell phone or smartphone in hand, such is the degree of penetration that this device has reached between us, and it is no wonder, because thanks to the tasks which he is able to meet, and the number of important built in functions, we can improve our lifestyle, increasing our productivity and reducing times.
This last decade has seen the birth of the smartphone as we know it today, mixing computer and cell phone offers features with which we could not even dream at the time that was fashionable the Nokia 3210, for example.
But to know more about the smartphone and technology, click on this link.
What hardware integrates a cell phone?
The parts of a traditional cell phone are:
- Circuit board
- LCD Screen (Liquid Crystal Display)
Functions of a cell phone
Cell phones have a variety of functions. To name a few, depending on the type of cell phone:
- Store contact information
- Manage an agenda of commitments to date
- Send and receive e-mails
- 3d games
- Send and receive text messages
- Surf websites
- Play mp3 and other audio formats
- Play video and TV online
- GPS service and maps of most cities in the world
- Integration with other devices such as GPS receiver
How a cell phone works?
Cell phones, operating on radio frequency, innovated to minimize the availability of RF spectrum. Now, several cell phone towers antennas are used to cover a large geographical area. Each tower (base station) covers a circular area called cell. A large geographic region is divided into a number of cells, allowing different base stations use the same channels / frequencies for communication.
Another important aspect of this division in cells, is that cell phones need less power to transmit to reach any base station and covering a smaller area. Reducing the energy required for transmission, battery size and weight is reduced accordingly. This contributes to the reduction in size of cell phones would not be possible without the cellular technology.
When you use your cell phone, your phone locates first base with the strongest signal station and requests a channel. The base station allows access to the channel and the call is then accepted. The call is then sent to the local telephone network if the call is for a common phone, otherwise will be transmitted by the mobile network.
When the cell phone is connected, the SID (System Identification Code) in the control channel is equivalent to the SID the phone. If the SID is identified, the phone understands that the cell is communicating with the local system. The phone sends a registration request, along with the SID and the MTSO keeps the course of the phone’s location in the database. If the control does not identify the SID of your phone, then your phone is roaming.
Major cell phone manufacturers
Most popular cell phone models on the market are produced by Nokia, Sony Ericsson, Motorola, Samsung, LG and Alcatel, among many others.
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