this switch is the only one of its type
81One Semi-Automated Forces (OneSAF) — is a distributed computer simulation used by the U. S. Army that supports both Computer Generated Forces (CGF) and Semi Automated Forces (SAF) applications. It is an entity level simulation where the objects in the simulation represent individual …
82History of the single-lens reflex camera — The history of the single lens reflex camera predates the invention of photography in 1826/27 by one and a half centuries with the use of a reflex mirror in a camera obscura first described in 1676. Such SLR devices were popular as drawing aids… …
831ESS switch — The Number One Electronic Switching System, the first large scale Stored Program Control (SPC) telephone exchange or Electronic Switching System in the Bell System, was introduced in Succasunna, New Jersey, in May 1965[1]. The switching fabric… …
84History of As the World Turns (2000–2007) — This article is about the history of As the World Turns (ATWT) from the 2000 era, the second longest running American television soap opera.2000 presentThe New Millennium As the World Turns rang in the new millennium with a Carly Tenney Originals …
85Radio communications during the September 11 attacks — This article reviews some of the details of radio communications at the September 11, 2001 World Trade Center attacks. [The purpose of revealing the operational details in this article is to allow operators of other communications networks and… …
86Panel switch — The panel switching system was an early type of automatic telephone exchange, first put into urban service by the Bell System in the 1920s and removed during the 1970s. The Panel and Rotary systems were developed in parallel by Bell Labs before… …
87List of The Dresden Files characters — The Dresden Files series features a diverse cast of complicated characters. Contents 1 Main characters 1.1 Harry Dresden 1.2 Karrin Murphy 1.3 Bob …
88Technology of the Song Dynasty — The Song Dynasty ( zh. 宋朝; 960–1279 CE) provided some of the most significant technological advances in Chinese history, many of which came from talented statesmen drafted by the government through imperial examinations.The ingenuity of advanced… …
89List of minor The Hitchhiker's Guide to the Galaxy characters — The following is an alphabetical list of the minor characters in the various versions of The Hitchhiker s Guide to the Galaxy, by Douglas Adams. The descriptions of the characters are accompanied by information on details about appearances and… …
90List of minor characters from The Hitchhiker's Guide to the Galaxy — The following is a list of minor characters in the various versions of The Hitchhiker s Guide to the Galaxy , by Douglas Adams.AgrajagAgrajag is a constantly reincarnated entity who ends up being killed multiple times by Arthur Dent. First… …
