Operating Systems

Operating Systems

1. Managing Resources

   • Manages Peripherals
     • Interfaces with different hardware, so software doesn't have to
     • Input and output devices
   • Manages Printing (Spooling)
     • Queues print jobs until printer is available
   • Manages Backing Store
     • Backups important data to an external device or cloud
   • File Compression
     • Configures folders or a drive
     • Files compressed when saved
     • Files decompressed when loaded
     • Automatic
   • Disk Defragmenter
     • Built into most operating systems
   • Manages Memory
     • Memory split into pages
       • Each application given a page
     • Improves security as one can't access the page of another
   • Manages Security
     • Memory paging
     • User authentication
     • Permissions

2. Providing an interface

   • Command Line Interface
     • Allows key functions to performed through a text interface
   • Graphical Interface
     • Provides access to key functions
       • Windows
       • Icons
       • Menus
       • Pointers
   • File Management Facilities
     • Copy
     • Delete
     • Move
     • Sort
     • Search
   • System Settings
     • Provides facility to alter settings
       • Hardware
       • Software
   • Multi-tasking
     • Makes it possible to run multiple programs
       • Same time
       • In seperate windows
   • Error Messages
     • Shows errors as pop-up messages
     • Gives support options
   • Task Management
     • Switch between different tasks and processes
   • Customisation
     • Allow user to change experience
       • Desktop Background
       • Layout

3. software that interfaces with the hardware of a computer and provides access for other software