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A computer is a programmable digital electronic machine that executes a series of commands to process the input data, conveniently obtaining information that is subsequently sent to the output units. -
The telegraph is a device that uses electrical signals to transmit coded text messages, such as Morse code, over wire lines or radio communications. -
The telephone is a telecommunication device created to transmit acoustic signals at a distance by means of electrical signals. -
Radio is a means of communication that is based on the sending of audio signals through radio waves -
Television is a system for the transmission and reception of images and sounds at a distance that simulate movements, which uses a diffusion mechanism. -
A tablet is a portable electronic device that is larger than a phone, integrates a touch screen that emits light and with which it interacts primarily with the fingers or a stylus, without the need for a physical keyboard or mouse. -
A mobile phone is a portable device that can make or receive calls through a radio frequency carrier, while the user is moving within a telephone service area.