telegraph data circuit
91Blu-ray Disc — Blue ray redirects here. For the fish of the same name, see Neoraja caerulea. Blu ray Disc Media type …
92Voice over IP — Digital voice redirects here. For the commercial service, see Comcast Digital Voice. Voice over Internet Protocol (Voice over IP, VoIP) is a family of technologies, methodologies, communication protocols, and transmission techniques for the… …
93Business telephone system — Early model 464G Western Electric key telephone set A business telephone system is any of a range of a multiline telephone systems typically used in business environments, encompassing systems ranging from small key systems to large scale private …
94Signals 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… …
95Wells — For other uses, see Wells (disambiguation). Coordinates: 51°12′26″N 2°39′07″W / 51.2073°N 2.6519°W / 51.2073; 2.6519 …
96Action potential — In physiology, an action potential is a short lasting event in which the electrical membrane potential of a cell rapidly rises and falls, following a consistent trajectory. Action potentials occur in several types of animal cells, called… …
97Manchester Small-Scale Experimental Machine — Replica of the Small Scale Experimental Machine (SSEM) at the Museum of Science and Industry in Castlefield, Manchester …
98IBM — This article is about the technology company sometimes referred to as Big Blue . For other uses of these terms, see IBM (disambiguation) and Big Blue (disambiguation). International Business Machines Corporation Type Public …
99Presidency of Barack Obama — 44th President of the United States Incumbent Assumed office January …
100ARPANET — For the producer, see Gerald Donald. ARPANET logical map, March 1977 The Advanced Research Projects Agency Network (ARPANET), was the world s first operational packet switching network and the core network of a set that came to compose the global …
