Published online by Cambridge University Press: 19 November 2008
In Physical terms, the Net—a term used generically—is a global system of computer linked by optical cable, telephone connections, microwave, and satellites. It comprises a number of individual networks, from LANs (Local Area Networks in individual institutions) to the largest, the Internet. (See Appendix Glossary for terminology explanations.) In January 1993, the Matrix News estimated that the Net comprised 2,152,000 host computers and 18,150,000 users. Now, in mid-1995, these figures are 3,500,000 host computers and 55 million users world-wide. From its beginnings in the U.S. military establishment, it now reaches into education, research, business and commerce, government, and private use. France is connecting its entire education system to the Internet. And the U.S.A. is leading the way not only in numbers of connections to the Internet, but also in providing access for non-university education fields. The Net is arguably the most dramatic new communications technology of the latter part of the 20th century.