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Computer (Charles Babbage)
We use the computer for work, play and call with friends -
Telegraph (Samuel morse)
The telegraph was used in the 1st and 2nd mundial war for comunicate between sheeps. -
Telephone (Alexander Graham Bell)
Before the telephone was used to comunicate with persons, but now we use this for find our mobile phones -
Radio (Guillermo Marconi)
The radio is used for listen music or the news -
Television (Philo Farnsworth)
The television is used for entertaiment and to inform us -
mobile phone (martin cooper)
The mobile phone is used for all, for comunicate, entretainment, play, etc. -
tablet (Alan klay)
The tablet is the same that an a mobile phone