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Crossbar switch
Crossbar switch A crossbar switch is one of the principal architectures used ... switches" or "crosspoint switches". The other principal switch architectures are that of a memory switch or a crossover switch. A banyan switch is an important ...
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Almon Strowger
Almon Strowger Almon Brown Strowger (1839 – May 26, 1902) gave his ... an inscription that reads: Lieut. A.B. Strowger, Co. A, 8 NY Cav. It is ... the father of the automatic telephone exchange. Strowger himself would more likely have characterised his ... a rival was a telephone operator and Strowger suspected that the operators were telling ...
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Stepping switch
Stepping switch In electrical controls, a stepping switch (also called a uniselector) is an electromechanical ... in early automatic telephone exchanges (commonly called Strowger exchanges) to route telephone calls. Stepping switches were invented by Almon Strowger in 1888. Basic operation of a stepping switch A basic stepping switch has a ...
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Two-motion switch (translated from German)
Two-motion switch That Two-motion switch an electromechanical ouple element is in one ... contents Control Circuit symbol A two-motion switch is steered by electrical pulse rates. First ... impulses are supplied to the two-motion switch, then the entrance is electrically connected with ... is firmly assigned to each two-motion switch. After end of a connection the ...
http://de.wikipedia.org/wiki/Hebdrehwähler - 6k - Cached (German) - Wikipedia (German) - Similar pages
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Panel switch
Panel switch The Panel telephone switch was an early type of automatic telephone ... into service in the 1920s. While the Strowger (step-by-step) switch moves synchronously with the dial pulses that ... come from the telephone dial, the Panel switch allows one digit of dial-ahead. ...
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Nonblocking minimal spanning switch
Nonblocking minimal spanning switch A substitute for a 16x16 crossbar switch made from 12 4x4 crossbar switches. A nonblocking minimal spanning switch is a piece of machinery, a "switch" that uses a particular algorithm to make ... large, expensive banks of electromechanical relays, or strowger switches. In the 1940s and 1950s, ...
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Central office
... that is commonly known as simply a switch, which is a piece of equipment that ... to an area served by a particular switch. And more narrowly, it can refer to ... plug would light, and the operator would switch into the circuit to ask "number please ... miles away. On March 10, 1891, Almon Strowger, an undertaker in Topeka, Kansas, patented the Strowger switch, a device which led to ...
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Logic gate
... illustrated with drawings of their relay-and-switch implementations, although the reader should remember that ... If a power lead is connected to switch A, and a wire connects switches A ... 0 1 0 1 1 1 |
