Review of encyclopedias and other databases available on CD-ROM focuses on the International Encyclopedia of Education (IEE). Problems with software and hardware are described, perspectives from the computer industry are presented, the commercial potential of CD-ROMs is discussed, and a list of sources is provided. (six references) (LRW)

Report on Viewtron, first commercial videotex service in the United States, includes its multifarious services, subscription base, management by Viewdata, and failure to succeed as quickly as was expected. Explanations for this shortfall are discussed, and based on a review of the entire system, recommendations are made for boosting sales.…

Reports on the state of currently available digital storage and retrieval systems and describes in detail one-sided optical videodisc LaserData and the Mnemos system, which stores graphic images on microfiche discs. Video Patsearch, Matrox, Philips Megadoc, DEMAND, and Digital Recording Corporation's optical digital records and future videodisc…