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)

Describes new technology known as videodisc, including optical videodisc, capacitance electronic disc, and video high density disc. Entertainment, educational, training, and information storage and retrieval potentials of videodiscs are discussed. A list of agencies active in optical disc applications, useful Canadian videodisc contacts, and a…

Reviews projects that have examined different aspects of videodisc--potential for multimedia storage, capability to provide interactive instruction, characteristics as electronic media bridging old and new information technologies--and discusses theoretical and practical issues associated with current and future use of videodisc for instruction.…

This paper describes the development of textual information displays for home consumption on modified television receivers in Great Britain over the last few years, compares two systems in use there--Teletext and Viewdata--and discusses some future possibilities for such services in the U.S. as well as the U.K. British television equipment…