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  2. Operating system - Wikipedia

    en.wikipedia.org/wiki/Operating_system

    A real-time operating system (RTOS) is an operating system intended for applications with fixed deadlines ( real-time computing ). Such applications include some small embedded systems, automobile engine controllers, industrial robots, spacecraft, industrial control, and some large-scale computing systems.

  3. Distributed operating system - Wikipedia

    en.wikipedia.org/wiki/Distributed_operating_system

    A distributed operating system is system software over a collection of independent software, networked, communicating, and physically separate computational nodes. They handle jobs which are serviced by multiple CPUs. [1] Each individual node holds a specific software subset of the global aggregate operating system.

  4. Linux - Wikipedia

    en.wikipedia.org/wiki/Linux

    A Linux-based system is a modular Unix-like operating system, deriving much of its basic design from principles established in Unix during the 1970s and 1980s. Such a system uses a monolithic kernel, the Linux kernel, which handles process control, networking, access to the peripherals, and file systems.

  5. Kernel (operating system) - Wikipedia

    en.wikipedia.org/wiki/Kernel_(operating_system)

    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 ...

  6. History of operating systems - Wikipedia

    en.wikipedia.org/wiki/History_of_operating_systems

    Computer operating systems (OSes) provide a set of functions needed and used by most application programs on a computer, and the links needed to control and synchronize computer hardware. On the first computers, with no operating system, every program needed the full hardware specification to run correctly and perform standard tasks, and its ...

  7. Network operating system - Wikipedia

    en.wikipedia.org/wiki/Network_operating_system

    A network operating system (NOS) is a specialized operating system for a network device such as a router, switch or firewall.. Historically operating systems with networking capabilities were described as network operating systems, because they allowed personal computers (PCs) to participate in computer networks and shared file and printer access within a local area network (LAN).

  8. Operating environment - Wikipedia

    en.wikipedia.org/wiki/Operating_environment

    Operating environment. In computer software, an operating environment or integrated applications environment is the environment in which users run application software. The environment consists of a user interface provided by an applications manager and usually an application programming interface (API) to the applications manager.

  9. Internet OS - Wikipedia

    en.wikipedia.org/wiki/Internet_OS

    Internet OS. An Internet operating system, or Internet OS, is any type of operating system designed to run all of its applications and services through an Internet client, [citation needed] generally a web browser. The advantages of such an OS would be that it would run on a thin client, allowing cheaper, more easily manageable computer systems ...