Unos Operating System Simulator

The course ‘Operating System Internals’ (OSI) usually focuses on teaching the concepts and issues surrounding the design of an OS in general. Students are advised to learn by example and through experiments, which are fundamental for the real understanding of operating system. Although controlled experiments with a commercial OS is one of basic approaches in organizing the practical work of students, unfortunately, the sheer speed and complexity of modern computer systems make them really hard to understand by the average students. So providing students with a high-level OS simulator that can isolate the actually environment is an alternative way that will allow students to observe the work of various OS components and to explore various algorithms. This paper describes our own developed UNOS Operating System Simulator, which is implemented as a standalone Java application simulating a basic multi-tasking non-preemptive operating system and requests least programming knowledge.