(system of signals)
1System X (telephony) — System X was the name of the UK s first national digital telephone exchange system.HistorySystem X was developed by the UK Post Office (later to become British Telecom), GEC, Plessey, and Standard Telephones and Cables (STC), and first shown in… …
2Signals and slots — is a language construct introduced in Qt, which makes it easy to implement the Observer pattern while avoiding boilerplate code. The concept is that controls (also known as widgets) can send signals containing event information (e.g. the text… …
3System Y — is a Digital telephone exchange system used by British Telecom as an alternative to the System X. System Y refers to the AXE 10 system manufactured by Ericsson. British Telecom decided to use the AXE10 digital switch in the mid 1980s as a way of… …
4Signals intelligence operational platforms by nation — This article is a subset article under the main article Signals intelligence, which addresses the unifying conceptual and technical factors and common technologies in this intelligence discipline. This article deals with current signals… …
5Signals intelligence — SIGINT redirects here. For the UNIX signal, see SIGINT (POSIX). RAF Menwith Hill, a large site in the United Kingdom, part of ECHELON and the UK USA Security Agreement. Signals intelligence (often contracted to SIGINT) is intelligence gathering… …
6Signals intelligence in modern history — This article is a subset article of the article Signals intelligence, which addresses the unifying conceptual and technical factors and common technologies in this intelligence discipline. This article deals with signals intelligence in the… …
7System analysis — See also systems analysis. : MISO redirects here, for the data line see Serial Peripheral Interface Bus. System analysis is the branch of electrical engineering that characterizes electrical systems and their properties. Although many of the… …
8Signals intelligence by alliances, nations and industries — This article is a subset article under the main article SIGINT, which addresses the unifying conceptual and technical factors in this intelligence discipline. This article describes how the discipline is used by multinational alliances and… …
9Signals on the TTC — The Toronto Transit Commission, or TTC, like most transit systems, uses a system of light based signals to give instructions to their trains. They use block signals commonly, as well as interlocking signals. The TTC uses the NX/UR system of… …
10Signals Intelligence — (SIGINT) The tsarist regime maintained a sophisticated signals intelligence capability. Both the Okhrana and the Foreign Ministry worked to break the codes of radical groups and foreign powers. A British diplomat was warned by a Russian… …
