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The computer is a programmable digital electronic machine that executes a series of commands to process input data into information that is then sent to output units. -
Telegraph is an apparatus or device that uses electrical signals for the transmission of coded text messages, such as Morse code, over wired lines or radio communications. -
The telephone is a telecommunication device designed to transmit acoustic signals over a distance by means of electrical signals. -
Radio is a means of communication based on sending audio signals via radio waves. -
It is an electronic device intended for the reception and reproduction of television signals. It usually consists of a screen and knobs or controls. -
It is a portable electronic device larger than a smartphone. -
It is a device with which you can communicate with anyone wherever you are.