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Abstraction (computer science) In software engineering and computer science, abstraction is the process of generalizing concrete details, [1] such as attributes, away from the study of objects and systems to focus attention on details of greater importance. [2] Abstraction is a fundamental concept in computer science and software engineering ...
Abstract machine. In computer science, an abstract machine is a theoretical model that allows for a detailed and precise analysis of how a computer system functions. [1] It is similar to a mathematical function in that it receives inputs and produces outputs based on predefined rules. Abstract machines vary from literal machines in that they ...
In computing, an abstraction layer or abstraction level is a way of hiding the working details of a subsystem. Examples of software models that use layers of abstraction include the OSI model for network protocols, OpenGL, and other graphics libraries, which allow the separation of concerns to facilitate interoperability and platform ...
Abstraction. Abstraction is a process wherein general rules and concepts are derived from the usage and classification of specific examples, literal ( real or concrete) signifiers, first principles, or other methods. "An abstraction" is the outcome of this process—a concept that acts as a common noun for all subordinate concepts and connects ...
Abstract management. Abstract management is the process of accepting and preparing abstracts for presentation at an academic conference. The process consists of either invited or proffered submissions of the abstract or summary of work. The abstract typically states the hypothesis, tools used in research or investigation, data collected, and a ...
In operating systems. A hardware abstraction layer ( HAL) is an abstraction layer, implemented in software, between the physical hardware of a computer and the software that runs on that computer. Its function is to hide differences in hardware from most of the operating system kernel, so that most of the kernel-mode code does not need to be ...
Abstract data type. In computer science, an abstract data type ( ADT) is a mathematical model for data types, defined by its behavior ( semantics) from the point of view of a user of the data, specifically in terms of possible values, possible operations on data of this type, and the behavior of these operations.
Abstract rewriting system. In mathematical logic and theoretical computer science, an abstract rewriting system (also (abstract) reduction system or abstract rewrite system; abbreviated ARS) is a formalism that captures the quintessential notion and properties of rewriting systems. In its simplest form, an ARS is simply a set (of "objects ...