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Line 15: ==Definition and purpose== An operating system is difficult to define,{{sfn\|Tanenbaum\|Bos\|2023\|p=4}} but has been called "the [[abstraction layer\|layer of software]] that manages a computer's resources for its users and their [[Application software\|application]]s".{{sfn\|Anderson\|Dahlin\|2014\|p=6}} Operating systems include the software that is always running, called a [[Kernel (operating system)\|kernel]]—but can include other software as well.{{sfn\|Tanenbaum\|Bos\|2023\|p=4}}{{sfn\|Silberschatz et al.\|2018\|p=6}} The two other types of programs that can run on a computer are [[~~Systems~~System ~~programming~~software\|system program]]s—which are associated with the operating system, but may not be part of the kernel—and applications—all other software.{{sfn\|Silberschatz et al.\|2018\|p=6}} There are three main purposes that an operating system fulfills:{{sfn\|Anderson\|Dahlin\|2014\|p=7}}

Operating system: Difference between revisions