In today's day and age, cell phones have almost become a necessity. Can you name more than one person you know who does not have a cellular phone? I can't even name one. Not only do cellular telephones provide easy mobile communications, but you can talk to virtually anyone from all over the world. As profuse as cell telephones are, do you actually know what one is? Cellular phones are basically very sophisticated radios with low-power transmitters in them. Cell phone service providers divide cities into small cells, about ten square miles per cell, and the phones ring into a central base station which answers back on whether service is available and what frequency to use. These super two-way radios are what we call a cell phone. Since a cell phone constantly changes which cell it's working within, these phones have amazing range. Now, a cellular phone works on either analog or digital technology. Analog means taking an audio or visual signal and translating it into electronic pulses. Size restrictions limit the amount of data an analog signal can carry. Generally, analog products are cheaper than digital. Digital differs in that the signal is translated into binary "1"s and "0"s rather than electronic pulses. This binary code gets read and reassembled by the receiving device. Having a simpler code means less errors and better clarity in the signal. Digital signals can also carry more information. Today, there are so many cell phones it's hard to know where to begin when buying one. You can get features like Internet access, voice mail, paging, text messaging, movie capabilities, and MP3 abilities. How should you narrow down your choices? Let's Talk.com (Letstalk.com) covers every cell phone detail from comparisons between phones and companies to cell phone specials in your area. You can also compare cell prices at How Stuff Works.com (Howstuffworks.com). For another great review on mobile phones, go to Answers.com. |
Cell Phones
