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Phones

    Phones Editor's Picks

    • The Effects of Cell Phones

      Cell phones are crucial telecommunications technology that have changed the face of business. Telecommuting and business travel have both been greatly enabled by the spread of cellular phones. Newer advances in wireless internet technology has lead to the spread of powerful phones capable of running functional office applications and... more »

    • How to Replace a Lost Sprint Cell Phone

      It is always a pain when you lose something as important as a cell phone. Cell phones are lost constantly and never returned, whether due to dishonest people who find them or the phones simply being too lost to find. Replacing a lost Sprint cell phone is fairly easy, although it can take some time and a few phone calls on your part. more »

    • How to Get People to Recycle Cell Phones

      Recycling cell phones is important because it reduces the amounts of metals and plastics that must be manufactured in the plants that make these devices. It can also lower greenhouse emissions, not to mention that recycled cell phones can be used to help those who are less fortunate. Most people don't recycle their cell phones because... more »

    • How Phones Work

      Whenever a phone call is made, voice between both parties is converted into electricity and passed along the phone lines-from one phone to the other. When you dial a phone number, the key pad sends a series of tonal signals that opens a request to connect to another landline. And when you speak, your voice causes a tiny microphone... more »

    • About Camera Phones

      Cameras have become one of the most sought after accessories on cell phones. The chance to instantly transmit photos is just irresistible. Camera phones are fast becoming the biggest seller of all the choices of cell phones. They are no longer considered something people want, but rather something they need. more »

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    Wikipedia

    Telephone

    The telephone (from the , tēle, "far" and φωνή, phōnē, "voice") is a telecommunications device that transmits and receives sound, most commonly the human voice. It is one of the most common household appliances in the developed world, and has long been considered indispensable to business, industry and government. The word "telephone" has been adapted to many languages and is widely recognized around the world.

    The device operates principally by converting sound waves into electrical signals, and electrical signals into sound waves. Such signals when conveyed through telephone networks — and often converted to electronic and/or optical signals — enable nearly every telephone user to communicate with nearly every other worldwide. Graphic symbols used to designate telephone service or phone-related information in print, signage, and other media include (U+2121), (U+260E), (U+260F), and (U+2706).

    History

    Credit for the invention of the electric telephone is frequently disputed, and new controversies over the issue have arisen from time-to-time. As with other great inventions such as radio, television, light bulb, and computer, there were several inventors who did pioneering experimental work on voice transmission over a wire and improved on each others ideas. Innocenzo Manzetti, Antonio Meucci, Johann Philipp Reis, Elisha Gray, Alexander Graham Bell, and Thomas Edison, among others, have all been credited with pioneering work on the telephone. An undisputed fact is that Alexander Graham Bell was the first to be awarded a patent for the electric telephone by the United States Patent and Trademark Office (USPTO) in March 1876."Brown"> That first patent by Bell was the master patent of the telephone, from which all other patents for electric telephone devices and features flowed.

    The early history of the telephone became and still remains a confusing morass of claims and counterclaims, which were not clarified by the huge mass of read more at » http://en.wikipedia.org/wiki/Telephone

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