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Thomas Meng (talk | contribs) m →Definition and purpose: fixed typo |
Guy Harris (talk | contribs) →Virtual machine: A virtual machine is not an operating system. A hypervisor is software that implements a virtual machine in which an operating system can run; it could be thought of as a type of operating system (it's the "true operating system" referred to by the source you're citing). |
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A [[real-time operating system]] is an operating system that guarantees to process [[Event (computing)|events]] or data by or at a specific moment in time. Hard real-time systems require exact timing and are common in [[manufacturing]], [[avionics]], military, and other similar uses.{{sfn|Tanenbaum|Bos|2023|p=38}} With soft real-time systems, the occasional missed event is acceptable; this category often includes audio or multimedia systems, as well as smartphones.{{sfn|Tanenbaum|Bos|2023|p=38}} In order for hard real-time systems be sufficiently exact in their timing, often they are just a library with no protection between applications, such as [[eCos]].{{sfn|Tanenbaum|Bos|2023|p=38}}
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