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A computer is a machine that stores and automates information through computer programs specifically designed for this task. -
The telegraph is a device that uses electrical signals to transmit coded text messages -
A telephone is a device that transmits sounds at a distance by means of electrical signals. -
The radio means of communication that is based on the sending of audio signals through radio waves. -
Television is a system for the transmission of images and sound at a distance through Hertian waves. -
A tablet is a mobile computing device in which the touch screen occupies almost its entire size and in which there is no physical keyboard. -
A mobile phone is a wireless handheld device that allows users to make and receive calls.