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Communication or message that is transmitted by telegraph.
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Communication system that transmits voice and sound over long distances by electrical or electromagnetic means.
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It is a communication that is based on the sending of audio signals through radio waves
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System of transmission of images and sounds at a distance by means of hertzian waves.
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Electronic machine capable of storing information and processing it automatically through mathematical and logical operations.
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Is a mobile computing device in which the touch screen occupies almost its entire size and in which there is no physical keyboard.
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It is a portable device that can make or receive calls through a radio frequency carrier.