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Telegraph / Joseph Henry
It was used to transmit a message instantly on a short distance -
Telephone / Antonio Meucci
Device used to communicate one person to another on a long distance, -
Radio / Guillermo Marconi
It is used to transmit oral information through electromagnetical waves through a long distance -
Television / John Logie
It is used to show images with sound from a long distance -
Computer / Konrad Zuse
Device that is used to calculate, search information, and othert much things. -
Tablet / Alan Kay
Portable device that is used to communicate, search information, calculate, and other things -
Mobile phone / Martin Cooper
It's a device that you can bring with yourself everywhere and you can communicate with persons around the world