![]() A real-time operating system may be single- or multi-tasking, but when multitasking, it uses specialized scheduling algorithms so that a deterministic nature of behavior is achieved. ![]() Windows CE and Minix 3 are some examples of embedded operating systems.Ī real-time operating system is an operating system that guarantees to process events or data by a specific moment in time. They are very compact and extremely efficient by design and are able to operate with a limited amount of resources. They are designed to operate on small machines with less autonomy (e.g. EmbeddedĮmbedded operating systems are designed to be used in embedded computer systems. 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, printing, and other resources to multiple users.Ī distributed operating system manages a group of distinct, networked computers and makes them appear to be a single computer, as all computations are distributed (divided amongst the constituent computers). A multi-user operating system extends the basic concept of multi-tasking with facilities that identify processes and resources, such as disk space, belonging to multiple users, and the system permits multiple users to interact with the system at the same time. Single-user operating systems have no facilities to distinguish users but may allow multiple programs to run in tandem. 16-bit versions of Microsoft Windows used cooperative multi-tasking 32-bit versions of both Windows NT and Win9x used preemptive multi-tasking. Cooperative multitasking is achieved by relying on each process to provide time to the other processes in a defined manner. Unix-like operating systems, such as Linux-as well as non-Unix-like, such as AmigaOS-support preemptive multitasking. In preemptive multitasking, the operating system slices the CPU time and dedicates a slot to each of the programs. Multi-tasking may be characterized in preemptive and cooperative types. These processes are each interrupted repeatedly in time slices by a task-scheduling subsystem of the operating system. This is achieved by time-sharing, where the available processor time is divided between multiple processes. Types of operating systems Single-tasking and multi-taskingĪ single-tasking system can only run one program at a time, while a multi-tasking operating system allows more than one program to be running concurrently.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |