There are some difficulties that a programmer must overcome in writing an operating system . Following are the difficulties
I find that the hardest part of programming is thinking of what to program.
However, for many people, the hardest part is getting their brain in the right frame of view and think the process through. For example, when writing a sorting algorithm, you would think that is pretty easy. But to tell a computer how to do it requires creative thinking.
Everyone has different opinions on programming difficulties, though, so don't take this answer as absolute.
I think the main difficulty in real-time programming is meeting the "real-time" requirements, i.e., you are required to accomplish tasks within the real-time constraints which I believe vary. I learnt this in an engineering internship at military and their requirements were quite stringent and mission critical.
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Well, on the first place, you have to be a very, very,VERY experienced programmer, with many years of practice.
First, they have to spend a couple of years with learning the theory and practice of operating systems, and another couple of years with mastering real-time systems.
First, they have to spend a couple of years with learning the theory and practice of operating systems, and another couple of years with mastering real-time systems.
Examine it very carefully.
drag
heat
Ohms law
write them down.
Understanding concurrency.
errorstrapsinterruptsbut mainly program errors
go to school, come eat then go stage diving
First, they have to spend a couple of years with learning the theory and practice of operating systems, and another couple of years with mastering real-time systems.
Managers usually have difficulty in delegating because of the management style that they adopt. They can overcome this by adopting a democratic style of management.
To succeed in dealing with (a problem or difficulty).
the range influences the extreme
No! All teens have things they are have difficulty dealing with, and need haelp to overcome them.
Albert Einstein had several problems that he had to overcome, but his biggest was difficulty with authority in school. He was even labeled "dumb" in school as a child.
We can overcome industrial pollution by treating the industrial waste properly before leaving it into the environment ,so that the surroundings are not much polluted. So we can keep the environment clean.
Roads were poor, and there weren't any fast vehicle areound.
A real time operating system needs to be "event driven" and have the ability to perform certain tasks in a very timely manner. Most true real-time operating systems use interrupts to handle events as they occur, such as a time-critical input message from a serial port or a digital I/O event from some peripheral hardware. Next, there should be some kind of prioritization, meaning that one process may be time critical, such as controlling the rods at a nuclear reactor, but other processes might be a little less critical, such as dimming the hallway lights at the reactor facility after hours. Third, there must be a mechanism in place for "multitasking", meaning that the computer must be able to switch between multiple active processes. Some operating systems create a process "stack" for each process, and if a high priority process is to be activated to handle an event, the operating system simply switches control to the higher priority process by loading the current data from the process stack. A true real time operating system can do that in just a couple clock ticks.