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Telegraph David Alter
A telegraph is a system for transmitting messages from a distance. David invented the the electric telegraph, one year before the morse telegraph was invented, but people thing that the who really invted telegraph was David. -
Computer Charles Babbage
A computer is an electronic device for storing and processing data, typically in binary form. Charles Babbage designed and attempted to build the first mechanically operated computer, which he called the "analytical machine". -
Telephone Alexander Graham
Alexander Graham Bell invented the telephone referred to as a device that transmitted sounds over a wire through electrical signals. Bell was long considered the inventor of the telephone, along with Elisha Gray. -
Radio Guglielmo Marconi
A radio works by transmitting and receiving electromagnetic waves. Many consider Nikola Tesla to be the true inventor of the radio, although it was Guglielmo Marconi who filed the patent. -
Television Philo Farnsworth
A television is a machine with a screen that receive broadcasting signals and change them into pictures. Philo Farnsworth successfully demonstrated electronic television in San Francisco, but there are other inventors. -
Tablet Alan Kay
A tablet is a portable electronic device of stone, clay or wood. These tablet was the first proposal very similar to a tablet of Alan kay.
And then in 1989, Jeff Hawkins created the fist tablet computer. -
Mobile Phone Martin Cooper
A mobile phone is a telephone with access to a radio celular radio system so it can be used over a wide area, without a physical connection to a network. Martin Cooper built the first cell phone and made the first cellular phone call. He is considered the father of the cell phone.