Part 1 of Essay
Multimedia, or mixed-media, systems offer presentations that integrate effects existing in a variety of formats, including text, graphics, animation, audio, and video. Such presentations first became commercially available in very primitive form in the early 1980s, as a result of advances that have been made in digital com ....

Part 2 of Essay
.... of material in a computer-accessible medium, such as on a CD-ROM or on the Internet. In a broader sense of the term it could also include paper products published with the aid of a desktop publishing program, or any form of printing that involves the use of a computer. Reference works became available in the mid-1980s both in CD-ROM format and online. Increasingly, in the 1990s, magazines, journals, books, and newspapers have become available in an electronic format, and some are appearing i ....