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the transmission and reception of electromagnetic waves of radio frequency, especially those carrying sound messages.
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a device that receives television signals and reproduces them on a screen.
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If the boss knew how much time you spent shopping online or Facebooking, do you think he or she would be happy?" -
a miniature keyboard or set of buttons for operating a portable electronic device, telephone, or other equipment.
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an electronic device for storing and processing data, typically in binary form, according to instructions given to it in a variable program.