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Television
an electronic system of transmitting transient images of fixed or moving objects together with sound over a wire or through space by apparatus that converts light and sound into electrical waves and reconverts them into visible light rays and audible sound -
Computer
A computer is a machine or device that performs processes, calculations and operations based on instructions provided by a software or hardware program. It has the ability to accept data (input), process it, and then produce outputs. -
Cellphone
a phone with access to a cellular radio system so it can be used over a wide area, without a physical connection to a network; a mobile phone.