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Telephono, Alexander Graham Bell
The phone is created to transmit acoustic signals at a distance by means of electrical signals. -
computer,Charles Babbage
The computer can be used to make calculations, make documents,... What explains the function is that the computer performs the software. -
telegraph,Samuel Morse
The telegraph is used to send text messages. -
radio, Guillermo Marconi
The radio is used to listen to things from other places. -
television,John Logie Baird
The television transforms the electrical signal it receives into the image we see on the screen. -
tablet,Alan Kay.
Tablets work almost the same as a computer, although sometimes they are focused to be used more for reading some content and web browsing than for professional uses. -
mobile phone, it is for talking to people and writing and for carrying it by hand
it is for talking to people and writing and for carrying it by hand