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Telegraph
The telegraph is a device that uses electrical signals to transmit coded text messages, such as Morse code, over wire lines or radio communications.
It was invented by Samuel Finley -
Telephone
A telephone is a device that permits two or more users to have a conversation when they are too far away to talk directly.
It was invented by Graham Bell -
Radio
Radio is the remote transmission of sound through electromagnetic waves that are capable of reaching thousands of people quickly and simultaneously through a receiving device.
It was invented by Nikola Tesla and Guglielmo Marconi -
television
System of transmission of images and sounds at a distance by means of hertzian waves.
It was invented by John Logie Baird -
Computer
Electronic machine that can store information and proces it automatically through mathematical and logical operations controlled by computer programs.
It was invented by Konrad Zuse -
Tablet
A Tablet is a type of laptop, larger than a smartphone, integrated into a touch screen that interacts primarily with the fingers, without the need for a physical keyboard or mouse.
It was invented by Alan Kay -
Mobile phone
The mobile phone is an electronic wireless device that allows access to the cellular or mobile phone network.
It was invented by Martin Cooper
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