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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 ...
DYSEAC - an early machine capable of distributing computing. 1955. General Motors Operating System made for IBM 701 [2] MIT 's Tape Director operating system made for UNIVAC 1103 [3] [4] 1956. GM-NAA I/O for IBM 704, based on General Motors Operating System. 1957.
Android (operating system) Android is a mobile operating system based on a modified version of the Linux kernel and other open-source software, designed primarily for touchscreen mobile devices such as smartphones and tablets. Android is developed by a consortium of developers known as the Open Handset Alliance, though its most widely used ...
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 ...
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 ...
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.
Kernel (operating system) An oversimplification of how a kernel connects application software to the hardware of a computer. The kernel is a computer program at the core of a computer's operating system and generally has complete control over everything in the system. The kernel is also responsible for preventing and mitigating conflicts ...