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is a machine that can be instructed to carry out sequences of arithmetic or logical operations automatically via computer programming.
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long-distance transmission of textual messages where the sender uses symbolic codes, known to the recipient, rather than a physical exchange of an object bearing the message.
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is a communication tool. Originally it was an electric tool transmitting analogue speech along wires
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is the technology of signalling and communicating using radio waves
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is a telecommunication medium used for transmitting moving images in monochrome (black and white), or in color, and in two or three dimensions and sound.
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is a portable telephone that can make and receive calls over a radio frequency link while the user is moving within a telephone service area.
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Is a mobile device, typically with a mobile operating system and touchscreen display processing circuitry, and a rechargeable battery in a single, thin and flat package.
