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Access method Control Block

См. также в других словарях:

  • Access method — An access method is a function of a mainframe operating system that enables access to data on disk, tape or other external devices. They were introduced in 1963 in IBM OS/360 operating system. [http://researchweb.watson.ibm.com/journal/rd/255/ausl… …   Wikipedia

  • Unit Control Block — In IBM mainframe operating systems from the z/OS line, a Unit Control Block (UCB) is a memory structure, or a control block , that describes any single input/output peripheral device, or a unit , to the operating system.A similar concept in Unix… …   Wikipedia

  • Basic direct access method — In IBM mainframe operating systems, basic direct access method (BDAM) is an access method to read and write data sets directly. In BDAM, the programmer has complete control of the organization of the file. Placement and retrieval is done by… …   Wikipedia

  • Control flow — Not to be confused with Flow control. In computer science, control flow (or alternatively, flow of control) refers to the order in which the individual statements, instructions, or function calls of an imperative or a declarative program are… …   Wikipedia

  • Birth control — For other uses, see Birth control (disambiguation). Birth control is an umbrella term for several techniques and methods used to prevent fertilization or to interrupt pregnancy at various stages. Birth control techniques and methods include… …   Wikipedia

  • Direct access storage device — In mainframe computers and some minicomputers, a direct access storage device, or DASD (  /ˈdæ …   Wikipedia

  • Job Control Language — (JCL) is a scripting language used on IBM mainframe operating systems to instruct the system on how to run a batch job or start a subsystem. The term Job Control Language can also be used generically to refer to all languages which perform these… …   Wikipedia

  • Concurrency control — In information technology and computer science, especially in the fields of computer programming (see also concurrent programming, parallel programming), operating systems (see also parallel computing), multiprocessors, and databases, concurrency …   Wikipedia

  • Crowd control (MMORPG) — For the general term, see crowd control. Crowd control (also called CC) is a term used in massive multiplayer online role playing games (MMORPG)s to refer to the ability to limit the number of mobs actively fighting during an encounter.[1] It can …   Wikipedia

  • Mutator method — In computer science, a mutator method is a method used to control changes to a variable. The mutator method, sometimes called a setter , is most often used in object oriented programming, in keeping with the principle of encapsulation. According… …   Wikipedia

  • Direct memory access — (DMA) is a feature of modern computers that allows certain hardware subsystems within the computer to access system memory independently of the central processing unit (CPU). Without DMA, the CPU using programmed input/output is typically fully… …   Wikipedia

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