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telegraph
Communication system that allows the transmission of information by means of electrical impulses and using a pre-established sign code.
Samuel Morse ivented the telegraph -
telephone
Communication system that transmits voice and sound over long distances by electrical or electromagnetic means.
Alexander Graham Bell ivented the telephone -
radio
Radio as a means of communication is the shortening of words such as broadcasting, radiophony, radio transmitter or radio transmitter
.Guillermo Marconi invented the radio -
television
Remote image and sound transmission system by means of hertzian waves.
Philo Taylor Farnsworth ivented the television -
computer
Electronic machine capable of storing information and processing it automatically through mathematical and logical operations controlled by computer programs.
Charles Babbage invented the computer. -
tablet
it is a mobile computing device in which the touch screen occupies almost its entire size and in which there is no physical keyboard.
Steve Jobs invented the tablet. -
mobile phone
It 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.
Martin Cooper invented the mobile phone