stored-program-control switching

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• Stored Program Control exchange — (SPC) is the technical name used for telephone exchanges controlled by a computer program stored in the memory of the system. Early exchanges such as Strowger, Panel, Rotary, and Crossbar were electro mechanical and had no software control. SPC… …   Wikipedia

• stored program control —    (SPC)    A technique that programs the memory of a common controlled switching unit to provide processing instructions relating to class marks, code conversions, routing, and trouble analysis …   IT glossary of terms, acronyms and abbreviations

• Control register — A control register is a processor register which changes or controls the general behavior of a CPU or other digital device. Common tasks performed by control registers include interrupt control, switching the addressing mode, paging control, and… …   Wikipedia

• Number Five Crossbar Switching System — The Number Five Crossbar Switching System or 5XB switch, designed by Bell Labs and made by Western Electric, was in use in Bell System telephone exchanges from 1948 to the 1980s. Its principal use was as a Class 5 telephone switch, though… …   Wikipedia

• Electronic Switching System — In telecommunications, an electronic switching system (ESS) is: * A telephone exchange based on the principles of time division multiplexing of digitized analog signals. An electronic switching system digitizes analog signals from subscriber… …   Wikipedia

• Number One Crossbar Switching System — The Number One Crossbar Switching System, or 1XB switch, was the primary urban local telephone exchange design used by the Bell System in the mid 20th century. Its switch fabric topology was based on the earlier urban panel switch system, which,… …   Wikipedia

• Wescom switching — Incorporated was a designer and manufacturer of PBXs and ACDs (under the 501 580 product name) from 1974 until its sale (along with Wescom Inc.) to Rockwell International in 1980. Rockwell continued the development and marketing of the 580… …   Wikipedia

• Shuttle-Mir Program — The Shuttle ndash;Mir Program was a collaborative space program between Russia and the United States, which involved American Space Shuttles visiting the Russian space station Mir , Russian cosmonauts flying on the shuttle and American astronauts …   Wikipedia

• Worldwide Military Command and Control System — The Worldwide Military Command and Control System (or WWMCCS) was a military command and control system implemented for the command and control of the United States military. It was created in the days following the Cuban Missile Crisis. WWMCCS… …   Wikipedia

• Erna Schneider Hoover — Dr. Erna Schneider Hoover (born 1926) invented a method for prioritizing processes within stored program control switching systems while working at Bell Laboratories. This method gave priority to processes that were concerned with in the input… …   Wikipedia

• 1ESS 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… …   Wikipedia