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A computer is an electronic device that manipulates information, or data. It has the ability to store, retrieve, and process data. -
A telegraph is a system for transmitting messages from a distance along a wire, especially one creating signals by making and breaking an electrical connection. -
A telephone is a system for trasmitting voices over a distance, using wire or radio, by converting acousting vibrations to electrical signals. -
A piece of electronic equipment used for listening to radio brodcasts. -
A television is a telecommunication medium used for transmitting moving images in black and white, or in color, and in two or three dimensions and sound. -
A tablet is a computer that is intermediate in size between a laptop computer and a smartphone. -
A mobile phone 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.