Mobile (phone celular) is a wireless, portable, long-range, electronic telephone directories, which can easily change during the trip antenna connections, from one radio reception cell to another radio reception cell, without dropping or losing the ongoing call.
(Celular phone) In addition to the standard voice function of telephone, current mobile phones have features such as SMS for text messages, MMS multimedia messaging, radio, games, Internet connectivity for e-mail, browsing, blogging, music (MP3) playback , memo recording, built-in cameras and camcorders, ringtones, personal organizers, Push to Talk (PTT), Bluetooth and infrared connectivity, call registers, streaming video, download video, video call, and also as a wireless modem for PCs are used that are connected to the Internet.
The performance in a mobile (phone celular) of rechargeable batteries can be recharged received from the socket, a USB port or a cigarette lighter socket in your car. Nickel-metal hydride were (to recharge the user only when the entire battery is empty off) the most common types of batteries due to the "memory effect" are suffering from lithium-ion batteries that do not have a memory effect replaced.
Cell phones (celular phone) arose from the invention of hexagonal cells in 1947 for the base stations by Bell Labs engineers at AT & T. This was developed in the 1960s by Bell Labs. During a call, the channel frequency is not automatically from one cell (base station coverage area) be changed to another cell (base station coverage area) as the person traveled from the area of a cell to the area of another cell. Amos Joel of Bell Labs invented invention, a breakthrough, calling it the "call transfer" by the might of the channel frequency will automatically be changed from one cell to another cell in the same call as the mobile user traveled from one cell to another cell. Because of their heavy construction, these phones were used mainly in automobiles.
The first practical cell phone in a non-vehicle attitude, and could be handheld, was by Martin Cooper, the General Manager (Communications Division) of Motorola, which call for the world `s first handheld cell phone (celular phone) invented made third April 1973.
The technology, which operates the mobile phone (celular phone) depends on the mobile operators, but all of these electromagnetic radio waves that are used in contact with a cell site (base station).The base station consists of several antennas mounted on a pole, tower, or buildings. Cell sites are spread at a distance of 5 to 8 miles (approximately 8 to 13 km) to each other. The low-power transceiver from the cell phone transmits the voice and data services to the nearest cell site. During the movement, the mobile phone "transfer" of information to other cells on the spot. Mobile operators use many technologies to maintain the smooth stream of digitized data from the phone to the cell site and vice versa.
The wireless telephone technologies are grouped under the heads of generations known, starting from zero generation or 0g. The current generation is going 4G, however, there are old cell phones (celular phone), which runs even on 1G, 2G and 3G technologies.The wireless telephone technologies are in each generation used as indicated below:
0G: PTT, MTS, IMTS, AMTS, OLT, MTD, Autotel / PALM, ARP 1G: NMT, AMPS / TAC / ETACS, Hicap, CDPD, Mobitex, DataTAC 2G: GSM, iDEN, D-AMPS, IS-95/cdmaOne, PDC, CSD, PHS, GPRS, HSCSD, WIDEN, 1xRTT/IS-2000 CDMA2000, EDGE (EGPRS) 3G W-CDMA, UMTS (3GSM), FOMA, TD-CDMA/UMTS-TDD, 1xEV-DO/IS-856, TD-SCDMA, GAN (UMA), HSPA, HSDPA, HSUPA, HSPA +, HSOPA 4G: UMB, UMTS Revision 8 (LTE), WiMAX Frequency bands: SMR, cellular, PCS
The impact of mobile (phone celular) usage on human health has considerable international concern. Scientific studies in Copenhagen by the Danish Institute of Cancer Epidemiology, National Cancer Institute and the Institute for Cancer Research, entail no connection between cancer and cell phone use. However, undertook an intergovernmental agency IARC (International Agency for Research on Cancer) as part of the World Health Organization of the United Nations, a study of 4,500 users and found a statistically significant association between cell phone use and cancer frequency. Further research is underway.
Mobile (phone celular) usage and driving is a common worldwide phenomenon. Some jurisdictions have banned the use of hand-held cell phones while driving, but allow hands-free mode of cell phone use while driving. However, studies have indicated that the distraction caused by the conversation itself found, therefore, take both hands and the hands-free cell phones to traffic accidents.Further studies on cell phone use on driving are underway.
Nokia Corporation is currently the world's largest maker of mobile phones (celular phone). Other notable cell phone manufacturers in alphabetical order, are 3G, Audiovox (now UT Starcom), Benefon, BenQ-Siemens, Fujitsu, High Tech Computer Corporation (HTC), Kyocera, LG Mobile, Motorola, NEC, Panasonic (Matsushita Electric), Pantech Curitel, Philips, Research In Motion, Sagem, Samsung, Sanyo, Sharp, Siemens, Sierra Wireless, SK Teletech, Sony Ericsson, T & A Alcatel, Toshiba and Verizon.
This article is under GNU FDL license without prior consent of the author can be disseminated. But the author's name and all the URLs (links) mentioned in the article and biography must be kept.
This article can be accessed http://www.polomercantil.com.br/celular.php also in Portuguese from the News Article section of page
(Celular phone) In addition to the standard voice function of telephone, current mobile phones have features such as SMS for text messages, MMS multimedia messaging, radio, games, Internet connectivity for e-mail, browsing, blogging, music (MP3) playback , memo recording, built-in cameras and camcorders, ringtones, personal organizers, Push to Talk (PTT), Bluetooth and infrared connectivity, call registers, streaming video, download video, video call, and also as a wireless modem for PCs are used that are connected to the Internet.
The performance in a mobile (phone celular) of rechargeable batteries can be recharged received from the socket, a USB port or a cigarette lighter socket in your car. Nickel-metal hydride were (to recharge the user only when the entire battery is empty off) the most common types of batteries due to the "memory effect" are suffering from lithium-ion batteries that do not have a memory effect replaced.
Cell phones (celular phone) arose from the invention of hexagonal cells in 1947 for the base stations by Bell Labs engineers at AT & T. This was developed in the 1960s by Bell Labs. During a call, the channel frequency is not automatically from one cell (base station coverage area) be changed to another cell (base station coverage area) as the person traveled from the area of a cell to the area of another cell. Amos Joel of Bell Labs invented invention, a breakthrough, calling it the "call transfer" by the might of the channel frequency will automatically be changed from one cell to another cell in the same call as the mobile user traveled from one cell to another cell. Because of their heavy construction, these phones were used mainly in automobiles.
The first practical cell phone in a non-vehicle attitude, and could be handheld, was by Martin Cooper, the General Manager (Communications Division) of Motorola, which call for the world `s first handheld cell phone (celular phone) invented made third April 1973.
The technology, which operates the mobile phone (celular phone) depends on the mobile operators, but all of these electromagnetic radio waves that are used in contact with a cell site (base station).The base station consists of several antennas mounted on a pole, tower, or buildings. Cell sites are spread at a distance of 5 to 8 miles (approximately 8 to 13 km) to each other. The low-power transceiver from the cell phone transmits the voice and data services to the nearest cell site. During the movement, the mobile phone "transfer" of information to other cells on the spot. Mobile operators use many technologies to maintain the smooth stream of digitized data from the phone to the cell site and vice versa.
The wireless telephone technologies are grouped under the heads of generations known, starting from zero generation or 0g. The current generation is going 4G, however, there are old cell phones (celular phone), which runs even on 1G, 2G and 3G technologies.The wireless telephone technologies are in each generation used as indicated below:
0G: PTT, MTS, IMTS, AMTS, OLT, MTD, Autotel / PALM, ARP 1G: NMT, AMPS / TAC / ETACS, Hicap, CDPD, Mobitex, DataTAC 2G: GSM, iDEN, D-AMPS, IS-95/cdmaOne, PDC, CSD, PHS, GPRS, HSCSD, WIDEN, 1xRTT/IS-2000 CDMA2000, EDGE (EGPRS) 3G W-CDMA, UMTS (3GSM), FOMA, TD-CDMA/UMTS-TDD, 1xEV-DO/IS-856, TD-SCDMA, GAN (UMA), HSPA, HSDPA, HSUPA, HSPA +, HSOPA 4G: UMB, UMTS Revision 8 (LTE), WiMAX Frequency bands: SMR, cellular, PCS
The impact of mobile (phone celular) usage on human health has considerable international concern. Scientific studies in Copenhagen by the Danish Institute of Cancer Epidemiology, National Cancer Institute and the Institute for Cancer Research, entail no connection between cancer and cell phone use. However, undertook an intergovernmental agency IARC (International Agency for Research on Cancer) as part of the World Health Organization of the United Nations, a study of 4,500 users and found a statistically significant association between cell phone use and cancer frequency. Further research is underway.
Mobile (phone celular) usage and driving is a common worldwide phenomenon. Some jurisdictions have banned the use of hand-held cell phones while driving, but allow hands-free mode of cell phone use while driving. However, studies have indicated that the distraction caused by the conversation itself found, therefore, take both hands and the hands-free cell phones to traffic accidents.Further studies on cell phone use on driving are underway.
Nokia Corporation is currently the world's largest maker of mobile phones (celular phone). Other notable cell phone manufacturers in alphabetical order, are 3G, Audiovox (now UT Starcom), Benefon, BenQ-Siemens, Fujitsu, High Tech Computer Corporation (HTC), Kyocera, LG Mobile, Motorola, NEC, Panasonic (Matsushita Electric), Pantech Curitel, Philips, Research In Motion, Sagem, Samsung, Sanyo, Sharp, Siemens, Sierra Wireless, SK Teletech, Sony Ericsson, T & A Alcatel, Toshiba and Verizon.
This article is under GNU FDL license without prior consent of the author can be disseminated. But the author's name and all the URLs (links) mentioned in the article and biography must be kept.
This article can be accessed http://www.polomercantil.com.br/celular.php also in Portuguese from the News Article section of page
