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It is a specialized hardware-dependent computer program which is also operating system specific that enables another program, typically an operating system or applications software package or computer program running under the operating system kernel, to interact transparently with a hardware device, and usually provides the requisite interrupt ...
The Linux kernel is a widely ported operating system kernel, available for devices ranging from mobile phones to supercomputers; it runs on a highly diverse range of computer architectures, including ARM-based Android smartphones and the IBM Z mainframes.
An example would be from supervisor mode to protected mode. This is where the operating system performs actions like accessing hardware devices or the memory management unit. Generally the operating system provides a library that sits between the operating system and normal user programs. Usually it is a C library such as Glibc or Windows API ...
An operating system is a software program that allows users to interact with the computer or mobile device and run applications (like Microsoft Office, Google Chrome, Facebook, etc).
It provides a platform (hardware abstraction layer) to run high-level system software and application software. A kernel is the core part of the operating system that defines an Application programming interface for applications programs (including some system software) and an interface to device drivers.
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. MAI Basic Four – An OS implementing Business Basic from MAI Systems.
iOS (formerly iPhone OS) [7] is a mobile operating system developed by Apple exclusively for its smartphones. It was unveiled in January of 2007 for the first-generation iPhone, [8] launched in June 2007. It is the operating system that powers many of the company's mobile devices, including the iPhone.
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 ...