operating systems

operating systems

1. file management

   • the os organises files into folders and subfloders
   • allows moving, copying, renaming and deleting of files in the folders
   • the OS manages file security, assigning read only or read-write permissions to users and files

2. process management

   • scheduling is used to make multiple processes appear to run at once
   • each process is allocated to the cpu
     • allowing the cpu to rapidly switch between different processes
   • main memory is split into pages
     • each page is allocated to a process
   • if memory runs out, virtual memory on secondary storage is used
     • this slows down the computer

3. peripheral management

   • external devices need to work with the operating system
   • the OS cant natively be compatible with every piece of hardware there is
   • device drivers are small pieces of software that translate the hardwares instructions to the OS instructions

4. user management

   • the OS authenticates and assigns permissions to users
   • it provides a user interface to allow the computer to be operated in a way that is easy to work with