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It is a means of communication that is based on the sending of audio signals through radio waves.
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The computer it is a programmable digital electronic machine that executes a series of commands to process the input data, conveniently obtaining information that is later sent to the output units. -
The telegraph is an electrical device capable of transmitting text messages. To do this, it uses coding, by means of Morse code, in electrically emitted signals. -
The telephone is a telecommunication device created to transmit signals, with the telephone you can talk with another people.
The telephone creator is Alexander Graham Bell -
It is an electronic device intended for the reception and reproduction of television signals. -
The tablet it is a mobile computing device in which the touch screen occupies almost its entire size and in which there is no physical keyboard. -
The mobile phone is a phone that can make and receive phone calls over a radio link while moving around a wide geographic area. It does this by connecting to a cellular network provided by a mobile operator, which allows access to the public telephone network.