Different types of electronic media include radio, television and the Internet. Electronic media is media that requires an electronic device to receive. Electronic and print media are the two most common methods of communication.
Ancient forms of media included hieroglyphs, symbols and cave paintings. Print media is media that is available in printed form and that is portable. The most common forms of print media are books, magazines and newspapers. Radio is the oldest form of electronic media, dating to the late 19th century. Radio is considered an extremely important wartime invention, allowing instant communication between commanders and soldiers on the battlefield.