Operating systems

Operating systems

1. File management

   • File management
     • os organises files into folders and subfolders and allows deleting moving and copying
   • levels of access
     • read only
       • Can access files but cant change or delete them
     • read-write
       • Users can view and alter files

2. process management

   • Pages
     • memory is broken up into fixed size blocks called pages
   • Multitasking
     • scheduling allows a CPU to appear to be doing tasks simultaneously(multitasking)
   • Virtual memory
     • a section of secondary storage is used as virtual memory
       • slows computer down

3. User management

   • interface
     • command line
       • text based controlled by user typing commands
       • most os provide a CLI
     • graphical user interface
       • (GUI) windows icons menus pointers
       • features a desktopwhere everything is displayed
       • used by most pc and phones os

4. peripheral management

   • Drivers
     • drivers are used to communicate different peripherals
   • Pulg and Play
     • type of peripheral that does not require drivers