Operating Systems.

Operating Systems.

1. ·

2. peripheral devices are controlled by the OS giving programs access to the device

   • The word interface means coming together enabling the user to interact with the computer

3. The Graphical user interface uses windows and icons to control the computer

   • Programs are not directly connected to devices as they pass data to the OS which is sent to the device so it can be used

4. The OS gives the user an interface so they can interact with the the computer

   • When you load an application the OS will copy the application to the RAM the OS will ensure that each program that loads has its own space on the RAM stopping data writing over saved data

5. The program passes this information to the OS and the OS is what saves files onto the hard disk

   • The OS provides: Graphical User Interface, Menu Driven Interface and Command Line Interface

6. The OS gives people different permissions

   • An OS enables multi tasking so that several devices can run at once

7. The command line interface is a simple compared to the GUI which is more developed by having icons and windows.

   • Multi tasking is many programs that are running at the same time

8. The user menu is less developed than GUI but its more simpler so it can be used but need menus for it to run

   • Peripheral devices are devices that are connected to the computer

9. The OS either allows the processor to take turns or do the quickest one first

10. As each user has a different user name and password

    • The most popular OS on a PC is a GUI