Operating systems are not only available on your computers. Many different device controls require operating systems, while those used in critical tasks require real-time operating systems.
In the first place, operating systems started to appear as Disk Operating System. This is due to the fact that the operating systems first run from ROMs (read-only memories) embedded in the machine, and everything else is wiped off when the computer shuts down unless they are saved to an external environment (such as a floppy disk). End-user operating systems have been away for the last 30 years; your disk is installed, updated, constantly write and delete their own information in media can be kept. We passed this part; the main part is in data processing architecture. Modern microprocessors and operating systems running these processors do not run until the same command is finished.
In fact, many jobs continue to walk in the background while running a single software. These software take precedence over the management of the operating system, higher priority processes have more runtime on the processor, others interrupt according to the power of the processor, or engage second or other cores. In this order of priority, they have access to the other components of the system. However, the priority in this access is always determined in the order of priority in the operating system and takes place in order of importance.
Therefore, the operating system holds incoming requests for a period of time (in microseconds). Low-level system commands, called interrupt, are used to enable and interrupt transitions between jobs. In this way, other operations are “introduced” and the software runs a bit from it. This scenario is the general scenario for operating systems running on our desktop or server systems.
In this scenario, there is no “immediate” or “instant” concept. The system determines what is important to it and tries to catch up to everything it can. Delays in percentiles or thousands of seconds of a second are considered normal.
Although delays in a thousandth of a second don’t mean much to you, it would mean that a processor that performs 1 billion cycles per second will work more cumbersome than a millionth. When you familiarize yourself with this idea, you can understand how cumbersome it is in the essence of ordinary operating systems. Yes, they can be perfect for your everyday use, but the truth is, they’re very slow and they’re interested in other things through thousands of millions of command cycles until you process your command! This is terrible! Okay, we’re exaggerating here, but it’s still far from ideal, isn’t it? Not, don’t worry. The ideal operating system is the multi-purpose operating system that runs every job, while the real-time operating system (RTOS) is something else.
Dedicated Operating System for Critical Tasks
Real-time operating systems (RTOS) are operating systems with kernel architectures that respond very quickly to hardware designed for mission-critical tasks and do not expect the rest of the system to enjoy certain operations. In real-time operating systems, the kernel responds to specific commands in a low and non-deviant time. After responding, the resulting result or the other thing to be triggered can now be called something about how the system is configured. The short response and processing time alone does not ensure that a real-time operating system exists. What is important is that the same or similar processes can be reacted within the framework of a standard with little variation. There are two basic approaches to the design of real-time operating systems. One of these is the event-based task transition.
If a request (thread) with a higher priority intervenes in the normal workflow, the processor returns directly to it. Time-sharing task switching controls active tasks by switching them at specific time intervals. Besides these two basic approaches, the other important issue is access to resources and resource management. The most important of these sources is undoubtedly memory. Real-time operating systems and software running on them become the task of managing memory allocation well, providing unallocated memory partitions, and keeping memory partitions ready for critical tasks.
Where to Use Real-Time Operating Systems?
Real-time operating systems are used in real-time operating systems, from the management of vehicles and systems where human life may be in danger, to space-propelled vehicles, medical applications, nuclear reactors and many controls of automobiles. Real-time operating systems