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An operating system is system software that manages computer hardware and software resources, and provides common services for computer programs. Learn about the different types of operating systems, such as multicomputer, distributed, embedded, real-time and virtual machine, and see examples of popular operating systems.
A chronological list of events in the history of computer operating systems from 1951 to the current day. See the oldest to newest order of operating systems, such as LEO I, Multics, Unix, Windows, and Linux.
A comprehensive table of various operating systems for different devices and platforms, with information on their creators, licenses, versions, and features. Learn about the history, types, and characteristics of different operating systems, from AIX to Zorin OS.
x86-64 (also known as x64, x86_64, AMD64, and Intel 64) is a 64-bit extension of the x86 architecture that supports larger amounts of memory and data. It introduces two modes of operation, 64-bit mode and compatibility mode, and expands the number and size of registers and instructions.
Learn how Unix was created by Bell Labs researchers in the 1960s and 1970s, based on the Multics project and the PDP-7 and PDP-11 machines. Discover the key features, innovations, and milestones of Unix and its evolution.
Cisco IOS is a proprietary operating system that runs on Cisco routers and switches. It provides routing, switching, internetworking, and telecommunications functions, and has a monolithic architecture and a command-line interface.
A real-time operating system (RTOS) is an operating system (OS) for real-time computing applications that processes data and events that have critically defined time constraints.
A comprehensive list of Windows operating systems for personal computers, servers, and other devices, from Windows 1.0 to Windows 11. See the release dates, codenames, editions, build numbers, architectures, and end of support dates for each version.