00000nam 2200000zi 4500 9.870225 CaOODSP 20250325092846 m o d f cr ||||||||||| 190320s1979 onc||||fo f0|| 0 eng d CaOODSP eng rda CaOODSP n-cn--- Co24-29/1979E-PDF Bochmann, Gregor V., 1941- author. Possible data base structures for future applications of videotex terminals / Gregor V. Bochmann. [Ottawa] : Department of Communications, 1979. 1 online resource (vii, 40 pages) text txt rdacontent computer c rdamedia online resource cr rdacarrier Digitized edition from print [produced by Innovation, Science and Economic Development Canada]. "Mai 1979." Includes bibliographical references. "There are presently several Videotex systems in the early operational or development stages. The principle of these systems is to provide access to some data base for a large class of users through an inexpensive terminal which uses an ordinary TV set for the display of the retrieved information. While user feedback to the data base is possible in most systems through the use of a key pad, the information retrieval procedures of the present systems are very simple-minded, consisting mainly of going interactively through a hierarchical directory of menu choices"--Executive summary, page iv. gccst Videorecordings gccst Information systems Canada. Department of Communications. PDF 1.34 MB https://publications.gc.ca/collections/collection_2019/isde-ised/Co24-29-1979-eng.pdf