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Telegraph (Jean Antoine Nollet)
The telegraph is an apparatus or device that uses electrical signals to transmit coded text messages, as with Morse code. -
telephone (Antonio Meucci)
The telephone is a telecommunication device designed to transmit acoustic signals at a distance by means of electrical signals. -
Television ( Vladímir Zvorykin y Philo Taylor Farnsworth)
Television is a system for the transmission and reception of images and sounds at a distance that simulate movements, which uses a diffusion mechanism. -
Radio (Guillermo Marconi)
A radio is an electronic device that allows the recovery of voice signals or of any other type, transmitted by a radio transmitter using electromagnetic waves. -
computer (Konrad Zuse)
It 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. -
Mobile phone (Martin Cooper)
It is a portable telephone that can make or receive calls through a radio frequency carrier, while the user is moving within a telephone service area. -
Tablet (nokia)
es un dispositivo electrónico portátil de mayor tamaño que un teléfono inteligente o un PDA, se trata de una sola pieza que integra3 una pantalla táctil que emite luz4 y con la que se interactúa primariamente con los dedos
