Editing Operating system (section)

===Real-time===
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}}