operating system

operating system

1. What Is OS - the chief program that manages all of the hardware and software,it has control of every process, file ,section of memory and device -it works as a middleman making sure both hardware and software correctly

2. There are five essential managers of every operating system and they all work together like a team to get jobs completed , the operating system works as their boss and to make sure they are all working in harmony

3. The memory manager

   • in charge of the main memory, it scans every request for memory space and checks if it is valid, it allows allocation of memory spaces that are not taken up already -memory spaces may need to be deallocation to free up space for other requests

4. The process manager

   • decide how to allocate the brain of the computer, known as the central processing unit(CPU) it is necessary that the process manager keeps track of the status of each process.It has to handle jobs as they enter the system and manager each process that is associated with those jobs

5. The device manager

   • monitor every decide channel and control unit, it has to choose the most efficient way to allocate all of the system devices that are connected to the computer. -Example: USB sticks, printers and external hard drives.

6. The file manager

   • checks every type of file that is on the system. This means data files, program files compilers and installed applications. it sets permissions, so that certain users can only see certain files. So when you log in to your guest account, you can't browse through the administrator's files as you do not have the permission to do so

7. The network manager

   • -provides a way for users to share hardware and software resources while also controlling the users access to them.