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2. Operating system - Wikipedia

   en.wikipedia.org/wiki/Operating_system

   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 ...

3. List of operating systems - Wikipedia

   en.wikipedia.org/wiki/List_of_operating_systems

   Cambridge CAP computer – operating system demonstrated the use of security capabilities, both in hardware and software, also a useful fileserver, implemented in ALGOL 68C; Flex machine – Custom microprogrammable hardware, with an operating system, (modular) compiler, editor, * garbage collector and filing system all written in ALGOL 68.

4. Comparison of operating systems - Wikipedia

   en.wikipedia.org/.../Comparison_of_operating_systems

   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 ...

5. Linux - Wikipedia

   en.wikipedia.org/wiki/Linux

   Linux is the leading operating system on servers (over 96.4% of the top one million web servers' operating systems are Linux), [28] leads other big iron systems such as mainframe computers, and is used on all of the world's 500 fastest supercomputers [d] (as of November 2017, having gradually displaced all competitors). [29] [30] [31]

6. How to Find Out if You Have the Most Updated Operating System

   www.aol.com/.../blog/most-updated-operating-system

   How to find the operating system for a Windows Machine. Method 1: Using System Information. Press Windows + R: Open the Run dialog by pressing the "Windows" key and "R" simultaneously. Type ...

7. History of operating systems - Wikipedia

   en.wikipedia.org/wiki/History_of_operating_systems

   History of computing. more timelines ... 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 ...