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Telegraph
A system for transmitting messages from a distance along a wire, especially one creating signals by making and breaking an electrical connection. -
Telephone
A system for transmitting voices over a distance using wire or radio, by converting acoustic vibrations to electrical signals. -
Radio
A radio station is a means of communication that offers radio programming with different types of content. Just as there are different communication channels, there are also different radio stations that you can tune in by setting the specific frequency. -
Television
System for the transmission of images and sounds at a distance by means of Hertzian waves. -
Computer
It is an electronic device for storing and processing data, typically in binary form, according to instructions given to it in a variable program. -
Tablet
It is a portable electronic device that is larger than a smartphone or a PDA, it is a single piece that integrates a touch screen that emits light and with which you interact primarily with your fingers without the need for a physical keyboard or mouse -
Mobile phone
It is a portable telephone that can make or receive calls through a radio frequency carrier, while the user is moving within a telephone service area.
