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The computer is a programmable digital electronic machine that executes a series of commands to process the input data, conveniently obtaining information that is subsequently sent to the output units. -
The telegraph is the communication system that allows the transmission of information by means of electrical impulses and using a pre-established code of signs. -
The telephone is the device that transmits sounds through a cable through electrical signals. -
The radius is the straight line that joins the center of a circle with any point on the edge of the circumference. -
Television is the system for transmitting images and sounds at a distance by means of Hertzian waves. -
Un teléfono móvil o teléfono celular es un dispositivo portátil que puede hacer o recibir llamadas a través de una portadora de radiofrecuencia, mientras el usuario se está moviendo dentro de un área de servicio telefónico -
The tablet is a portable electronic device larger than a smartphone or a PDA, it is a single piece that integrates a touch screen that emits light.