A mobile phone (also known as a cellular phone‚ cell phone and a hand phone) is a device that can make and receive telephone calls over a radio link while moving around a wide geographic area. It does so by connecting to a cellular network provided by a mobile phone operator‚ allowing access to the public telephone network. By contrast‚ a cordless telephone is used only within the short range of a single‚ private base station. In addition to telephony‚ modern mobile phones also support a wide variety
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Mobile Phone Several examples of non-flip mobile phones‚ from the early 2000s. [pic] |Inventor |Martin Cooper | |Launch year |1973 | |Company |Motorola | |Available? |Worldwide | A mobile phone (also called mobile‚ cellphone or handphone) is an electronic device used for full duplex two-way radio telecommunications over a cellular network of base stations known
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ACKNOWLEDGEMENT INTRODUCTION Mobile phones‚ also known as cell phones or wireless phones‚ are hand-held phones with built-in antennas. Unlike home phones‚ cell phones can be carried from place to place with a minimum of fuss. This makes them a good choice for people who want to be in touch with other people even when they are away from the house. Cell phones are a vast improvement over the telecommunications technology of the past‚ and have become a necessity of modern life. As always‚ communication
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Wireless network refers to any type of computer network that uses wireless (usually‚ but not always radio waves) for network connections. It is a method by which homes‚ telecommunications networks and enterprise (business) installations avoid the costly process of introducing cables into a building‚ or as a connection between various equipment locations.[1] Wireless telecommunications networks are generally implemented and administered using radio communication. This implementation takes place
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and disadvantages of owning a mobile phone By: Wayne Leon Learmond • Published: December 5‚ 2013 Long gone are the days when people would search around desperately for loose change in order to use the public phone box. Long gone are the days of standing in queues in all weathers in order to wait for that all-important phone call - if one did not have a land-line phone at home. Mobile phones have freed us from all of the inconveniences of the way we used phones in the past. The blessing
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and explain why‚in the past thirty years‚we have moved from a situation where the mobile phone did not exist‚upto to today when almost everyone has one and it has become a necessity This essay will discuss the Mobile phone and look at its origins and analyse how it has evolved over time to become a necessity in the present day. A Mobile Phone or cellular phone is a device that is used to make and receive telephone calls over a radio link over a wide geographical area.It does this by connecting
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The hand held mobile phones came into existence somewhere during 70’s‚ and in India during 90’s. India is the second largest‚ in mobile telecommunication system. As the number of service providers increased‚ the rates had to decrease. The main service providers are "Airtel‚ Reliance‚ Vodafone‚ Idea cellular and BSNL. With the emergence of more and more mobile service providers‚ the monopoly of land line service provider (BSNL) seems to be in threat and forced them to be more efficient in the quality
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when we feel bore 4)makes closer when we r away(easy to get touch with our family) 5)we have fun there(by taking snaps‚videos when there is a function) 6)calendar 7)Timer 8)can do calculation 9)it isPortable demerits: 1)Expensive 2)Some of them are too thin and easily broken. 3)may cause distraction inlearning or when we are at work 4)spend less time with our family(by talking through it always) 5)may get damaged easily by water 6)signals(tower) may not be avail clearly
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Mobile Phone Everyone nowdays own mobile phone‚ big or small‚ poor or rich and the reason behind that is Human being life depend on mobile phone . Mobile phone is a device that is used in making and receiving telephone calls. It was invited by Martin Cooper in 1970. He was the first one to handeled mobile phone and to led the team that had brought it to the market.Martin Cooper was born on December 28th‚ 1928. He as not died yet.
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Health Issues Do cell phones pose a health hazard? Many people are concerned that cell phone radiation will cause cancer or other serious health hazards. The weight of scientific evidence has not linked cell phones with any health problems. Cell phones emit low levels of radiofrequency energy (RF). Over the past 15 years‚ scientists have conducted hundreds of studies looking at the biological effects of the radiofrequency energy emitted by cell phones. While some researchers have reported biological
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