how the operating system is capable of managing our resources????

Question

how is the operating system capable of managing our resources? i want a brief answer and relating to its principle of working.

Answer 1

Try reading a bit on this site to learn about OS:
http://www.personal.kent.edu/~rmuhamma/OpSystems/os.html
It's really not that brief, but it will give you an overview of how things work. Speaking of how stuff works, try reading the article on howstuffworks.com:
http://computer.howstuffworks.com/operating-system.htm
The first couple of pages looked good, at least.
I wish I could tell you more from experience, but it will be at least a year before I take OS at my university.

Answer 2

Briefly:

The OS has to manage three major resources, CPU, Memory, and disk,

Every OS has a process scheduler. Processes are typically in any number of states, but one of those states is "Ready to run", and all the processes that are "ready to run" share the processor in some fashion until they a(page fault b(issue a disk read 3( voluntarily give up the CPU or 4(terminate. Usually processes have priority, and the OS processes usually have highter priority than user processes.

Usually the OS owns all the memory and parcels it out to processes. Processes usually have predetermined limits on their working set, so they can only grow so large before they start paging. The OS has to manage everything so that everyone gets what they need at some reasonable level of performance.

The OS will have other programs to do file handling, but it needs to be able to efficiently load a program into memory from the executable. It also needs to page out blocks of memory to a paging file or pull them back in to balance all the working sets.

The OS also manages connections to ther devices, and there is often special handling for network devices.

People complain about Windows but writing an Operating System is a monstous undertaking. Look at the size of Windows or MVS. That's a lotta code.

Answer 3

In striking that part of the laptop, you may have accidentally destroyed the hard disk. Those things are very delicate. I think that it *is* possible to recover data from hard drives that have suffered physical destruction, but I have only ever heard of it once: the guy in Connecticut who shot up all those kids in that school had apparently taken a hammer to his computer's hard disk before he set off, and the cops/FBI are supposedly using this technology to piece the data on the drive back together. I really don't know if that can happen for you though. Since you have an install disc, you can fix the computer if you can buy a new hard drive of the same specification (likely 2.5 inch SATA). But everything will be new and clean, there really is no practical way of getting all that stuff back. Startup repair won't help you if the disk itself is destroyed, even if you let it run for a decade.

Answer 4

In simplest terms, the OS is the interface between your application software (such as a word processor, etc.) and your computer hardware. When you want to save something to a file, you push the "save" button, and the OS takes it from memory and sends it to the medium on which you are saving. I'm guessing the simplest way to look at an OS is as a middle man.

I hope this helps.