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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. 2 : a television receiving set. -
Radio
Radio is a way to send electromagnetic signals over a long distance, to deliver information from one place to another. ... When radio signals are sent out to many receivers at the same time, it is called a broadcast. Television also uses radio signals to send pictures and sound. -
Computer
A computer is an electronic device that manipulates information, or data. It has the ability to store, retrieve, and process data. You may already know that you can use a computer to type documents, send email, play games, and browse the Web. -
Newspaper
a printed publication (usually issued daily or weekly) consisting of folded unstapled sheets and containing news, feature articles, advertisements, and correspondence. -
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.