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Telegraph/ Samuel Morse
The telegraph is an apparatus or device that uses electrical signals to transmit coded text messages, such as Morse code, through wire lines or radio communications -
Telephone/ Alexander Graham Bell
The telephone is a telecommunication device designed to transmit acoustic signals at a distance by means of electrical signals -
Television/ John Logie
Television is a system for the transmission and reception of images and sounds at a distance that simulate movements, which uses a diffusion mechanism. The transmission can be carried out by means of radio waves, by cable television networks, satellite television or IPTV -
Radio/ Guillermo Marconni
Radiocommunication is a form of telecommunication that is carried out through radio waves or Hertzian waves, which in turn is characterized by the movement of electric fields and magnetic fields -
Computer/ Konard Zuse
The computer is a programmable digital machine that executes a series of commands to process the input data, obtaining convenient information that is subsequently sent to the output units -
Tablet/ Alan Key
A tablet is a portable electronic device that is larger than a smartphone or a PDA, it is a single piece that integrates3 a touch screen (single or multi-touch) that emits light4 and with which you interact primarily with your fingers or a stylus (passive or active), without the need for a physical keyboard or mouse. The latter are replaced by a virtual keyboard -
Mobile phone/ Martin Cooper
A mobile phone or cell phone is a portable phone that can make or receive calls through a radio frequency carrier, while the user is moving within a telephone service area.
