mobile phone (also known as a cellular phone‚ cell phone‚ and a hand phone) is a phone 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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1.What energy is converted into electrical energy from mobile phone batteries? Chemical energy is converted in to electrical energy from a mobile phone battery 2.What is sound energy from your voice converted to inside a mobile phone for transmission from the phone to a cell tower? The sound energy is first converted in to electrical energy by its batteries and then converted in to microwaves by the phones antenna and then it is sent to the nearest cell tower at a particular frequency. 3
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8 April 2011 Cell Phones: How They Have Changed Us Socially Cell phones have changed the way people socially interact with each other. Nowadays‚ anyone anywhere can just pick up their cell phone and call each other at any time of the day or night. (Stewart 1). In the past when there were just house phones around‚ people could use the excuse “Sorry I wasn’t home to answer your call” but now‚ with the emerging of cell phones‚ people will get a hold of you somehow. Cell phones are considered to be
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The cellular phone industry was born in the early 1980s‚ when communications technology that had been developed for the Department of Defense was put into commerce by companies focusing on profits. This group‚ with big ideas but limited resources‚ pressured government regulatory agencies—particularly the Food and Drug Administration (FDA)—to allow cell phones to be sold without pre-market testing. The rationale‚ known as the “low power exclusion‚” distinguished cell phones from dangerous microwave
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Why Smart Phones Are A Smart Choice In this new up-to-date age of technology‚ we as humans always have our hands full‚ literally. Our attention is so occupied by a hand held mobile device called the smart phone. Smart phones are advanced mobile phones that satisfy all your computing and communicating needs. The first smart phone was invented by IBM (International Business Machines) in 1992. Since then the mobile technology has been on the rise. The demand for smart phones has increased significantly
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Why people nowadays prefer using mobile phone to using telephone ? Although many researches indicated that mobile phones have some bad influences on human‚ The number of people using mobile phones are increasing every year. First of all ‚ I’ll talk about the advantages of cell phone and how does it influence to our daily life . The most obvious advantages of mobile phone are that it can be mobilized. People can use mobile phones everywhere they want such as buses‚ companies‚ schools etc. Meanwhile
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service provided the bulk of revenues for mobile phone firms‚ data services are now asserting themselves as the next big driver of sales.This shift toward data services is being pushed along by the rapid growth of the smartphone market‚ with virtually all major manufacturers now offering phone models that double as personal digital assistants‚ cameras‚ music players and‚ most especially‚ Internet browsers.2 In the article “Impact of Camera Phones” by Max T. Limpag‚ stated that the Philippines
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was a kid. I wanted sport balls‚ toys‚ games‚ iPods‚ a brother and so much more‚ but the most I wanted was my very own phone. There was a time when I really wanted a phone but was not able to get it because it costs too much and because I am too young. Everyone in school and all my friends started getting a phone but I wasn’t able to. I was not too or desperate for getting a phone then until I started working. At first I would work with my brothers and if I needed to call someone or my manager I would
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cCELL PHONES A cell phone is the biggest invention of this century. It changed our lives dramatically and nothing is the same anymore. Especially combining computer and phone made such a different world for everyone. The reason for the invention was to help us communicating easily‚ but in my opinion it also causes us to cut off communication between people. First of all‚ we became virtual humans because we are constantly texting and using social media on our phones‚ we also start having virtual
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Cellphone Cellphone has become a necessity for my daily life. I can’t live a day without cellphone. Cell phones have a huge social impact on American society these days. It made our life easy and fast. The cellular phone is an essential tool of communication today‚ which has changed the way I live. This invention allows me to communicate faster‚ contact people constantly‚ enjoy Internet service and even be entertained. Cellphone is an easy and fast way to communicate. I can contact with my family
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