space-switched system
51SSN — Die Abkürzung SSN bedeutet: SafeSeaNet, ein europäisches maritimes Datennentzwerk zur Verhinderung von Umweltverschmutzung und Unfällen auf See Secure Server Network Ship Submersible Nuclear, offizielle Bezeichnung für atomgetriebene Jagd U Boote …
52History of the Internet — Main article: Internet The history of the Internet starts in the 1950s and 1960s with the development of computers. This began with point to point communication between mainframe computers and terminals, expanded to point to point connections… …
53eye, human — ▪ anatomy Introduction specialized sense organ capable of receiving visual images, which are then carried to the brain. Anatomy of the visual apparatus Structures auxiliary to the eye The orbit The eye is protected from mechanical injury… …
54Adel Sedra — is an Egyptian electrical engineer whose research specialization is microelectronics, with particular emphasis on applications in communication and instrumentation systems. He received his bachelor of science in electrical engineering from Cairo… …
55Streetcars in Washington, D.C. — This article refers to the streetcars that existed in Washington prior to 1962. For information on the proposed new streetcar lines, see DC Streetcar. Washington Streetcars 15th Street NW in the early 20th century Info …
56Digital terrestrial television in the United Kingdom — encompasses over 100 television, radio and interactive services broadcast via the UK s terrestrial television network and receivable with a standard television aerial. The majority of services, including those from the existing five analogue… …
57Computer network — Computer networks redirects here. For the periodical, see Computer Networks (journal). Datacom redirects here. For other uses, see Datacom (disambiguation). Internet map. The Internet is a global system of interconnected computer networks that… …
58telephone — telephoner, n. /tel euh fohn /, n., v., telephoned, telephoning. n. 1. an apparatus, system, or process for transmission of sound or speech to a distant point, esp. by an electric device. v.t. 2. to speak to or summon (a person) by telephone. 3.… …
59United Kingdom — a kingdom in NW Europe, consisting of Great Britain and Northern Ireland: formerly comprising Great Britain and Ireland 1801 1922. 58,610,182; 94,242 sq. mi. (244,100 sq. km). Cap.: London. Abbr.: U.K. Official name, United Kingdom of Great… …
60Telephone exchange — A telephone operator manually connecting calls with cord pairs at a telephone switchboard. In the field of telecommunications, a telephone exchange or telephone switch is a system of electronic components that connects telephone calls. A central… …
