This introduction to electronic mass media balances coverage of cutting-edge new technologies with the history, regulation, and programming topics that are equally important in providing students with a strong foundation for future careers. The text offers broad-based coverage of business structures, sales and economics, radio and television programming, and broadcast news, as well as an up-to-date look at transmission technologies, both audio and video systems, and electronic media distribution technologies. A unique Part IV examines media and media systems in other countries, as well as research into how the media affect our society.