00000nam 2200000za 4500 9.860316 CaOODSP 20221107160449 cr ||||||||||| 180809s1992 onca|||#o f000 0 eng d 0-660-12018-6 1188-2964 CaOODSP eng eng fre n-cn--- NM97-2/1-2E-PDF Dewalt, Bryan, 1959- Building a digital network [electronic resource] : data communications and digital telephony, 1950-1990 / Bryan Dewalt. Data communications and digital telephony, 1950-1990 Ottawa : Canada Science and Technology Museum, c1992. 70 p. : ill. Transformation series = Collection Transformation ; No. 2 Digitized edition from print [produced by Canada Science and Technology Museum]. Includes bibliographic references. "The period between about 1960 and 1990 was marked by major changes in the technology and organization of telecommunications in Canada and the rest of the industrialized world. The key to this change was the evolution of a versatile, multipurpose network. By converting all types of information to digital pulses, this network could accommodate everything from telephone conversations, to written messages, to computer data, to photographs and moving pictures"--Abstract., p. 4. Includes abstract in French. gccst Telecommunications gccst Telecommunications networks gccst Digital technology Canada. Canada Science and Technology Museum. Building a digital network: data communications and digital telephony, 1950-1990 / (CaOODSP)9.609914 Transformation series ; No. 2 (CaOODSP)9.512488 PDF 6.64 MB https://publications.gc.ca/collections/collection_2018/mstc-cstm/NM97-2-1-2-eng.pdf