Time-sharing operating systems schedule tasks for efficient use of the system and may also include accounting for cost tryst of processor time, mass storage, printing, and other resources.
For hardware functions such as input and output and memory allocation, the operating system acts as an intermediary between programs and the computer hardware,[1][2] although the application code is ordinarily executed directly by the hardware and will oft make a system call to an OS function or be interrupted by it. Operating systems dirty dog be found on almost any thingummy that contains a computerâ€"from cellular phones and video game consoles to supercomputers and mesh servers.
Examples of popular modern operating systems include Android, BSD, iOS, GNU/Linux, mac OS X, Microsoft Windows,[3] Windows Phone, and IBM z/OS. All these, except Windows and z/OS, persona roots in UNIX.
Real-time
A real-time operating system is a multitasking operating system that aims at executing real-time applications.
Real-time operating systems often use specialized computer programming algorithms so that they can achieve a deterministic personality of behavior. The main objective of real-time operating systems is their quick and inevitable response to events. They have an event-driven or time-sharing design and often aspects of both. An event-driven system switches between tasks based on their priorities or external events fleck time-sharing operating systems switch tasks based on clock interrupts.
Multi-user
A multi-user operating system allows multiple users to entrance a computer system concurrently. Time-sharing system can be classified as multi-user systems as they enable a multiple user access to a computer...If you want to get a full essay, nine it on our website: Orderessay
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