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A computer is a machine that can be instructed to carry out sequences of arithmetic or logical operations automatically via computer programming.
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An apparatus for communication at a distance by coded signals.
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An instrument for reproducing sounds at a distance, you can speak to or attempt to reach by telephone.
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The wireless transmission and reception of electric impulses or signals by means of electromagnetic waves.
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An electronic system of transmitting transient images of fixed or moving objects together with sound over a wire or through space by apparatus that converts light and sound into electrical waves and reconverts them into visible light rays and audible sound.
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A phone that is connected to the phone system by radio instead of by a wire, and can be used anywhere its signals can be received.
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A mobile computing device that has a flat, rectangular form like that of a magazine or pad of paper, that is usually controlled by means of a touch screen, and that is typically used for accessing the Internet, watching videos, playing games, reading electronic books, etc.
