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Telephone
Device that receives and transmits long-distance communications and is connected to a telephone network -
Telegraph
Long distance transmission of written messages without the physical transport of letters, originally over cables -
Radio
Public telecommunication, represented by the emission, transport and reception of voices, music and sound effects by means of electromagnetic waves that, without cables and connections, travel from a centrally located source (station) to the listener (receiver) -
Television
Sistema de transmisión de imágenes y sonido a distancia a través de ondas hercianas -
Computer
Electronic machine that receives and processes data with the mission of transforming it into useful information. -
Tablet
Laptop bigger than a smartphone and smaller tha a computer, but his funcion is the same than the computer -
Mobile phone
A mobile phone is a telephone that you can carry with you and use to make or receive calls wherever you are
