Background of Cellular Phones

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Thousands and thousands of people in the United States and around the world are familiar with cell phones. With gadgets such as cell phones, you can stay connected with your friends and family and talk with anyone anywhere on the planet. And what's more, you can do all these from just about anywhere!

The cell phones in the market these days have an incredible plethora of functions and gizmos. Every month or so, new functions are constantly being added to make your cell phones even more useful to use. Truth be told, typical cell phones nowadays can do just about anything. Depending on the cellular phone model, here are some of the things you can do:

* Store contact facts * Make task or to-do lists * Keep track of appointments and set reminders * Use the built-in calculator for simple math * Send or receive email * Get information, such as news, entertainment, stock quotes from the Internet * Play simple games * Integrate other devices such as PDAs, MP3 players, and GPS receivers

All right, so now that we have enumerated some of the stuffs that cell phones can do. But have you ever wondered how cell phones work? What makes cell phones different from regular phones?

If you're frustrated by the conflicting and inaccurate knowledge you've found on this topic, then don't worry. Our team of authorities has developed this article to ensure that you find only the most accurate and up to date data. This is your best source for information! Read on and find out why.

To start with the basics, cell phones are basically radio devices. Well, they are extremely sophisticated radio devices but radio nonetheless. The telephone was invented by Alexander Graham Bell in 1876 and wireless communication came to be with the invention of the first radio by Nikolia Tesla in the 1880s. It was perhaps only natural that these two great technologies would be used together to create the cellular phone.

Before the age of cell phones, people who needed the portability of mobile-communications devices installed radio telephones in their cards. This meant that the telephone would have to have a big transmitter that's powerful enough to transmit 40 to 50 miles. Now, for the mobile person where usefulness is a must, that's not greatly appealing.

The genius of cell phones is the division of a city into tiny cells. This allows extensive frequency reuse across a city so that millions of people can use cell phones simultaneously. Typical cell phones in the United States can receive about 800 frequencies to use across the city. This is indeed a big step from the radio-telephone system where only about 25 channels are afforded per city. What the cellular phone carrier does is to chop up the city into hundreds of cells, each measuring about 10 square miles. Because cell phones and base stations use low-power transmitters, the same frequencies can be reused in non-adjacent cells. This allows more people to use cell phones without choking the frequency pathway.

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