The first radio receiver was introduced by Alexander Popov. Radio has a great history. Radio is a part of mass media that worth using. During the war it was used for secret messages. Then radio was used for broadcasting news and music, shows, dramas, and other. Nowadays we use it mainly for listening to music and entertaining. There are a great number of different radios with various programs, for example, business news, games, interesting talks. Also it is the good opportunity for advertise something. Many people prefer listen to the radio in a car especially during the trip.
