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Computer, Charles Babbage
Computers are very useful to have at home, you can do many things as on a phone, but they are bigger and have a separate keyboard.
Now a day, laptops exist, that are computers that you can trasport. -
Telegraph, Joseph Henry
It is a device that uses electrical signals to transmit encrypted text messages, for example morse code -
Telephone, Alexander Graham Bell
A telephone is a telecommunication device created to transmit signals that allows us to speak with other people as long as we want.
Now, it's really easy to use one because it is the new technology and now you can use the phone, but before it was a bit more complicated. -
Radio, Guglielmo Marconi
A radio is a communication system which is based on sending audio signals through radio waves.
It is used to hear something or someone talking. This signal can be for one o thousands of people. -
Television, John Logie Baird
Television is a system for the transmission and reception of images and sounds at a distance that simulate movements.
You can see programs, Tv series... -
Tablet, Alan Kay
A tablet is a portable electronic device that has a middle sice.
It consists of a single piece which includes the keyboard on it so its easier to transport. -
Mobile phone, Martin Cooper
Mobile phones are devices really useful, you can do many things such as calling, texting, uploading apps... even though before you could just call.