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An operating system is difficult to define, [6] but has been called "the layer of software that manages a computer's resources for its users and their applications". [7] Operating systems include the software that is always running, called a kernel—but can include other software as well.
JNode (Java New Operating System Design Effort), written 99% in Java (native compiled), provides own JVM and JIT compiler. Based on GNU Classpath. [37] [38] JX Java operating system that focuses on a flexible and robust operating system architecture developed as an open source system by the University of Erlangen. KERNAL (default OS on ...
The classic Mac OS [a] (System Software) is the series of operating systems developed for the Macintosh family of personal computers by Apple Inc. from 1984 to 2001, starting with System 1 and ending with Mac OS 9. The Macintosh operating system is credited with having popularized the graphical user interface concept. [32]
This category is for articles about the architecture, components, and technology of operating systems. For articles about particular operating systems, see the Category:Operating systems and some of its subcategories.
The internet often has to deal with complex, unstructured data that cannot be relied on to fit a specific data model. The technology of knowledge-based systems, and especially the ability to classify objects on demand, is ideal for such systems. The model for these kinds of knowledge-based internet systems is known as the Semantic Web. [13]
Knowledge Discovery Metamodel (KDM) is a publicly available specification from the Object Management Group (OMG). KDM is a common intermediate representation for existing software systems and their operating environments, that defines common metadata required for deep semantic integration of Application Lifecycle Management tools.
Using x86 as an example, there is a special [clarification needed] gate structure which is referenced by the call instruction that transfers control in a secure way [clarification needed] towards predefined entry points in lower-level (more trusted) rings; this functions as a supervisor call in many operating systems that use the ring ...
A technical reference model can be defined as a taxonomy of services arranged according to a conceptual model, such as the Open System Environment model. The enumerated services are specific to those needed to support the technology computing style (e.g., distributed object computing) and the industry/business application needs (e.g., Human ...