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Is a system for transmitting messages from a distance along a wire, especially one creating signals by making and breaking an electrical connection. -
Radio is sound communication by radio waves, usually through the transmission of music, news, and other types of programs from single broadcast stations to multitudes of individual listeners equipped with radio receivers. -
the electronic delivery of moving images and sound from a source to a receiver. -
Is a device that accepts information (in the form of digitalized data) and manipulates it for some result based on a program, software, or sequence of instructions on how the data is to be processed. -
They have a screen, are powered by a rechargeable battery, often include a built-in camera, and can store all kinds of files. -
Portable device for connecting to a telecommunications network in order to transmit and receive voice, video, or other data.