Reviews the state of information technologies involving teletext, viewdata, interactive graphics, videodisc, audio synthesis, and holography, and discusses the current understanding of access schemes and cognitive processing. Sixteen suggested readings and nine references are cited. (FM)

Attractive features of the videodisc, a storage medium of digital and visual information, include large storage capacity, low cost, rapid access, and ease of duplication. Widespread adoption of the videodisc will be determined by availability of appropriate software and funding, and public demand and perceptions about its advantages over other…

This essay addresses problems associated with technology used in the handling of high-resolution visual images in electronic document delivery. Highlights include visual fidelity, laser-driven optical disk storage, electronics versus micrographics for document storage, videomicrographics, and system configurations and peripherals. (EJS)

Presents the options and limitations available in microcomputer-based graphic systems. Factors that must be considered when selecting a system--resolution, color, video-compatibility, and cost--and the relationship between these factors are discussed. (MBR)