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Computer, Charles Babbage
What is a computer? A computer is a machine or device that performs processes, calculations and operations based on instructions provided by a software or hardware program.
How does it work? A computer works by changing information into binary numbers and then using mathematics to make decisions about how to rearrange those numbers into words or actions.
What is a computer for? A computer is for: look information in a web and also for type documents, send email, play games... -
Telegraph, Samuel Morse
What is a telegraph? A telegraph is a communication system that sends information by making and breaking an electrical connection.
How does it work? You have to press a button to write in morse.
What is a telegraph for? It is most associated with sending electrical current pulses along a wire with Morse code encoding. -
Telephone, Alexander Graham Belt
What is a telephone? A telephone is a system for transmiting voices over a distance using wire o radio.
How does it work? A telephone work sending signals to telephone towers using RF waves.
What is a telephone for? A telephone is for communicate with people over a long distance. -
Radio, Guillermo Marconi
What is a radio? A radio is a means of communication that is based on the sending of audio signals through radio waves.
How does it works? A radio works by transmitting and receiving electromagnetic waves.
What is a radio for? A radio is for inform and guide society with messages for education -
Television, John Logie Baird
What is a television? A television is a remote image and sound transmission system by means of hertzian waves.
How does it works? Televisions contain a mixture of noble gases that when excited with electricity, turns into plasma and the phosphors begin to emit light.
What is a television for? A television is for watch different things in it: series, movies... The point of these things is to entertain you. -
Tablet, Alan Kay
What is a tablet? A tablet is a wireless, portable personal computer with a touchscreen interface.
How does it works? Tablets work in very much the same way that most electronics work, they have a screen are powered by a rechargeable battery, often include a built-in camera...
What is a tablet for? Tablets let you do many of the same things as a computer, you can: look for a web, play games, make photos and videos... -
Mobile phone, Martin Cooper
What is a mobile phone? A mobile phone is a portable device that can make or receive calls over a radio frequency carrier.
How does it work? A mobilephone works that there is a microchip in the phone that modulates a radio wave using the electrical signal.
What is a mobile phone for? A mobile phone can do lots of things like: play games, do photos or videos, search in navigational systems...