Defines digital technology and demonstrates its applications in the home, workplace, and entertainment, communications, and sound recording industries.
Discusses the decline of the old European empires, the world wars, scientific advances, new religious and cultural ideas, and other changes that occurred during the twentieth century.
Describes the dropping of the atomic bomb on Hiroshima in 1945 and discusses the events that led up to this decision and the terrible aftermath which led to still-continuing attempts to control the manufacture and use of nuclear weapons.
