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Switching Amplifiers
Switching may refer to: Computing and technology * Switching, functions performed by a switch: ** Electronic switching ** Packet switching, a digital networking communications methodology *** LAN switching, packet switching on Local Area Networks ** Telephone switching, the activity performed by a telephone exchange (telephone switching machine) * Switching, a synonym for shunting in rail transport Other uses * Switching (ecology), a pattern of predation describing predators' selection of food based on its abundance * ''Switching'' (film), a 2003 Danish interactive film * Switching (pickleball), when doubles partners switch sides of their court * Code-switching, of languages * Immunoglobulin class switching Immunoglobulin class switching, also known as isotype switching, isotypic commutation or class-switch recombination (CSR), is a biological mechanism that changes a B cell's production of immunoglobulin from one type to another, such as from the ..., an immunological m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Switch
In electrical engineering, a switch is an electrical component that can disconnect or connect the conducting path in an electrical circuit, interrupting the electric current or diverting it from one conductor to another. The most common type of switch is an electromechanical device consisting of one or more sets of movable electrical contacts connected to external circuits. When a pair of contacts is touching current can pass between them, while when the contacts are separated no current can flow. Switches are made in many different configurations; they may have multiple sets of contacts controlled by the same knob or actuator, and the contacts may operate simultaneously, sequentially, or alternately. A switch may be operated manually, for example, a light switch or a keyboard button, or may function as a sensing element to sense the position of a machine part, liquid level, pressure, or temperature, such as a thermostat. Many specialized forms exist, such as the toggle swit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electronic Switch
In electronics, an electronic switch is a switch controlled by an Passivity (engineering), active electronic component or device. Without using moving parts, they are called solid state switches, which distinguishes them from mechanical switches. Electronic switches are considered Binary number, binary devices because they dramatically change the Electrical resistivity and conductivity, conductivity of a path in electrical circuit between two extremes when switching between their two states of ''on'' and ''off''. History Many people use metonymy to call a variety of devices that conceptually connect or disconnect signals and communication paths between electrical devices as "switches", analogous to the way mechanical switches connect and disconnect paths for electrons to flow between two conductors. The traditional relay is an electromechanical switch that uses an electromagnet controlled by a current to operate a mechanical switching mechanism. Other operating principles ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Packet Switching
In telecommunications, packet switching is a method of grouping Data (computing), data into short messages in fixed format, i.e. ''network packet, packets,'' that are transmitted over a digital Telecommunications network, network. Packets consist of a header (computing), header and a payload (computing), payload. Data in the header is used by networking hardware to direct the packet to its destination, where the payload is extracted and used by an operating system, application software, or Protocol stack, higher layer protocols. Packet switching is the primary basis for data communications in computer networks worldwide. During the early 1960s, American engineer Paul Baran developed a concept he called ''distributed adaptive message block switching'', with the goal of providing a fault-tolerant, efficient routing method for telecommunication messages as part of a research program at the RAND Corporation, funded by the United States Department of Defense. His ideas contradicted t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
LAN Switching
A network switch (also called switching hub, bridging hub, Ethernet switch, and, by the IEEE, MAC bridge) is networking hardware that connects devices on a computer network by using packet switching to receive and forward data to the destination device. A network switch is a multiport network bridge that uses MAC addresses to forward data at the data link layer (layer 2) of the OSI model. Some switches can also forward data at the network layer (layer 3) by additionally incorporating routing functionality. Such switches are commonly known as layer-3 switches or multilayer switches. Switches for Ethernet are the most common form of network switch. The first MAC Bridge was invented in 1983 by Mark Kempf, an engineer in the Networking Advanced Development group of Digital Equipment Corporation. The first 2 port Bridge product (LANBridge 100) was introduced by that company shortly after. The company subsequently produced multi-port switches for both Ethernet and FDDI such as Gig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telephone Switching
A telephone exchange, telephone switch, or central office is a central component of a telecommunications system in the public switched telephone network (PSTN) or in large enterprises. It facilitates the establishment of communication circuits, enabling telephone calls between subscribers. The term "central office" can also refer to a central location for fiber optic equipment for a fiber internet provider. In historical perspective, telecommunication terminology has evolved with time. The term ''telephone exchange'' is often used synonymously with ''central office'', a Bell System term. A central office is defined as the telephone switch controlling connections for one or more central office prefixes. However, it also often denotes the building used to house the inside plant equipment for multiple telephone exchange areas. In North America, the term ''wire center'' may be used to denote a central office location, indicating a facility that provides a telephone with a dial ton ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shunting (rail)
Shunting, in railway operations, is the process of sorting items of rolling stock into complete trains, or the reverse. In the United States this activity is known as switching. Motive power Motive power is normally provided by a locomotive known as a ''shunter locomotive'' (in the UK) or switcher locomotive (in the US). Most shunter/switchers are now diesel-powered but steam and even electric locomotives have been used. Where locomotives could not be used (e.g. because of weight restrictions) shunting operations have in the past been effected by horses or capstans. Hazards Coupling The terms "shunter" and "switcher" are not only applied to locomotives but also to employees engaged on the ground with shunting/switching operations. The task of such personnel is particularly dangerous because not only is there the risk of being run over, but on some railway systems—particularly ones that use buffer-and-chain/screw coupling systems—the shunters have to get between the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Switching (ecology)
Prey switching is frequency-dependent selection, frequency-dependent predation, where the predator preferentially consumes the most common type of prey. The phenomenon has also been described as apostatic selection, however the two terms are generally used to describe different parts of the same phenomenon. Apostatic selection has been used by authors looking at the differences between different genetic morphs. In comparison, prey switching has been used when describing the choice between different species. Definition The term ''switching'' was first coined by the ecologist Murdoch in 1969 to describe the situation where a predator eats disproportionately more of the most common type of prey. Eight years earlier in 1962 the geneticst Bryan Clarke, B. C. Clarke described a similar phenomenon and called it "apostatic selection". Since then the term ''prey switching'' has mainly been used by ecologists, while ''apostatic selection'' has been used by geneticists, and because of this the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Switching (film)
{{Unsourced, date=January 2023 ''Switching'' is the first ever Danish interactive film directed by Morten Schjødt, produced by Oncotype and released in 2003. It was financed by, and in cooperation with, the Danish Film Institute, with the support of the "Development Fund of the Ministry of Culture", the MEDIA Programme of the European Union and the DFI Film Workshop. It is distributed by SF Film A/S. Introduction ''Switching'' is a different type of film that paves the way for new storytelling methods. Switching was specially developed for DVD video. The fascination with interactive expression basically originates in its potential to depict a more fragmented form of reality. The user of this film enters a narrative labyrinth simultaneously unfolding and disrupting the story. There are three elements that explain why ''Switching'' departs from the linear form: *The film can be changed at any time. Consequently, the user can jump back and forth in time and location. * The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Switching (pickleball)
This glossary provides definitions and context for terminology related to, and jargon specific to, the sport of pickleball. Words or phrases in italics can be found on the list in their respective alphabetic sections. 0–9 ;0–0:See '' Zero–Zero'' ;0–0–2 or 0–0–start: See '' Zero–Zero–Two''. ;20 by 44:A pickleball ''court''. Pickleball courts measure by . A ;Ace:Any ''serve'' that is not returned by the ''receiver'', or, more specifically, a serve that the receiver's ''paddle'' never touches. The term, originally used in tennis, has been attributed to American sportswriter Allison Danzig. ;APP or APP Tour:See ''Association of Pickleball Players'' ;Approach shot:A shot executed while moving from the ''backcourt'' towards the ''non-volley line''. ;Around-the-post (ATP):A legal shot that travels outside the net posts; its trajectory may be above or below the height of the net. ;Association of Pickleball Players:An American amateur and ''pro pickleball tour'' sanct ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Code-switching
In linguistics, code-switching or language alternation occurs when a speaker alternates between two or more languages, or language varieties, in the context of a single conversation or situation. These alternations are generally intended to influence the relationship between the speakers, for example, suggesting that they may share identities based on similar linguistic histories. Code-switching is different from plurilingualism in that plurilingualism refers to the ability of an individual to use multiple languages, while code-switching is the act of using multiple languages together. Multilinguals (speakers of more than one language) sometimes use elements of multiple languages when conversing with each other. Thus, code-switching is the use of more than one linguistic variety in a manner consistent with the syntax and phonology of each variety. Code-switching may happen between sentences, sentence fragments, words, or individual morphemes (in synthetic languages). Ho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Immunoglobulin Class Switching
Immunoglobulin class switching, also known as isotype switching, isotypic commutation or class-switch recombination (CSR), is a biological mechanism that changes a B cell's production of immunoglobulin from one type to another, such as from the isotype IgM to the isotype IgG. During this process, the constant-region portion of the antibody heavy chain is changed, but the variable region of the heavy chain stays the same (the terms ''variable'' and ''constant'' refer to changes or lack thereof between antibodies that target different epitopes). Since the variable region does not change, class switching does not affect antigen specificity. Instead, the antibody retains affinity for the same antigens, but can interact with different effector molecules. Mechanism Class switching occurs after activation of a mature B cell via its membrane-bound antibody molecule (or B cell receptor) to generate the different classes of antibody, all with the same variable domains as the orig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
