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An operating system (OS) is system software that manages computer hardware and software resources, and provides common services for computer programs. Time-sharing operating systems schedule tasks for efficient use of the system and may also include accounting software for cost allocation of processor time, mass storage, peripherals, and other ...
A monolithic kernel is an operating system architecture with the entire operating system running in kernel space. The monolithic model differs from other architectures such as the microkernel [1][2] in that it alone defines a high-level virtual interface over computer hardware. A set of primitives or system calls implement all operating system ...
Icon (computing) Desktop icons for file/data transfer, clock/awaiting, and running a program. In computing, an icon is a pictogram or ideogram displayed on a computer screen in order to help the user navigate a computer system. The icon itself is a quickly comprehensible symbol of a software tool, function, or a data file, accessible on the ...
Memory hierarchy affects performance in computer architectural design, algorithm predictions, and lower level programming constructs involving locality of reference. Designing for high performance requires considering the restrictions of the memory hierarchy, i.e. the size and capabilities of each component. Each of the various components can ...
A system context diagram in engineering is a diagram that defines the boundary between the system, or part of a system, and its environment, showing the entities that interact with it. [2] This diagram is a high level view of a system. It is similar to a block diagram.
The architecture of macOS describes the layers of the operating system that is the culmination of Apple Inc. 's decade-long research and development process to replace the classic Mac OS. After the failures of their previous attempts—Pink, which started as an Apple project but evolved into a joint venture with IBM called Taligent, and Copland ...
Business Operating System (BOS) – developed to be ported across microcomputers. EOS – developed by ETA Systems for use in their ETA-10 line of supercomputers. EMBOS – developed by Elxsi for use on their mini-supercomputers. GCOS – a proprietary operating system originally developed by General Electric.
The article "Usage share of operating systems" provides a broader, and more general, comparison of operating systems that includes servers, mainframes and supercomputers. Because of the large number and variety of available Linux distributions, they are all grouped under a single entry; see comparison of Linux distributions for a detailed ...