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Telegraph
The telegraph was used to trasmist messages far away.
The creator of the telegraph is Joseph Henry. -
Telephone
Is a system for transmitting voices over a distance using wire or radio, by converting acoustic vibrations to electrical signals. The telephone was made it by a lot of people. One of them was Antonio Meucci. -
Radio
Radio is sound communication by radio waves, usually through the transmission of music, news, and other types of programs from single broadcast stations to multitudes of individual listeners equipped with radio receivers.
The radio was created by Guglielmo Marconi. -
Television
Television is a system for transmitting visual images and sound that are reproduced on screens, chiefly used to broadcast programs for entertainment, information, and education.
The TV was made it by John Logie Baird. -
Computer
A computer is an electronic device that manipulates information, or data. It has the ability to store, retrieve, and process data.
The first computer created by Konrad Zuse in 1938 and the first computer was called Z1 -
Tablet
The tablets uses for watching presentations, videos, ,reading e-books, watching movies, sharing photos, calls with your friends... (it's like a big mobilephone).
The creator of the tablet was Alan Kay -
Mobile phone
A mobile phone is a wireless portable device that allows users to make and receive calls, play videogames...
The creator of the mobile phone was Martin Cooper