lunes, 27 de agosto de 2012

HISTORY

ORIGINS


Cell phones may be new devices, but they originated in the 1920’s. Radios were used since 1921. Features were put into these radios in the 1940’s, and they were used by police. The concept of the cellular phone was developed in 1947 which originated from the mobile car phone. The concept of the cellular phone was produced by Bell Laboratories.

The first actual cell phone was made in 1973 by Martin Cooper of Motorola and other assisting inventors who used the idea of the car phone and applied the technology necessary to make a portable cell phone possible. Cell phones were first made available to the public in 1984. Back then, they were very large, expensive instruments.




First Generation Cell Phones
While the technology had been developed, it was not until 1971 that AT&T submitted a request to the FCC for cellular service. It took more than 10 years for an approval and in 1982, the FCC allocated the frequencies of 824-894 MHZ Band to Advanced Mobile Phone Service (AMPS). 

In 1983, Motorola unveiled the first truly portable cellular phone to the world. It was called the Motorola DynaTAC 8000X.. The DynaTAC800X was extremely lightweight for its time and only weighed about 28 ounces. It was 13 inches x 1.75 inches x 3.5 inches and was known as the Brick for its shape. It was largely developed with the help of Dr. Martin Cooper of Motorola.


Cell phones have evolved immensely since 1983, both in design and function.
From the  models old until the iPhone 3G, which can take a picture, play a video, or run one of the thousands applications available from the Apple Store.

In the following video there are a  timeline brief



8 comentarios:

  1. This topic is very interesting, because the tecnology is the life in the present. Good information!
    Maria Paulina Salcedo C

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  2. this video is very funny and interesting, the evolution of cell phone is surprising although not very good to realize that I have the technology of 2003! jajajaj Nokia 1100
    by Manuela Castro

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  3. is incredible the rapid evolution that the cell phones have had in the last years. Now a cell phone has T.V, camera, music player and mamy more things. Before these served only to call.
    LUISA MARIA MONSALVE LOPERA

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  4. The science and technology, has always been part of us, all we must do is to know and learn the maximum advantage of all that we provide.

    Fabio Zapata

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  5. It is amazing how technology has progressed through time. Definitely the technology has been very important in recent years, especially in regard to communication. Juliet Contreras

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  6. This issue is more prevalent in our everyday life, because for more innovative of its content, its goal will always be the same, communicate.


    Alejandro parra

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  7. This element has been the best technological advancement of the century. Whit this you can see your bussines, your family and all your life.


    Alejandro Parra

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  8. It is fantastic the advancement of the mobile devices and the influence that it has caused in the modern world (Sebastian Ocampo)

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