OS Systems

OS Systems

1. Why do we need them ?

   • The OS manages many parts of the computer so that applications don't have to.
     • Examples of OS Systems:Windows,Mac OS,Linux,Unix,Android,Ios and Chrome OS
   • Allows programs to function on their on functionality and not having to worry about :
     • Multitasking , file management,security and memory usage.

2. What does a OS manage:

   • CPU
     • Executes 4 billion instructions every second, while the processor is waiting for other components to catch up it is not doing anything.
   • Multi-tasking
     • Multi-tasking is when a processor is doing two different tasks simultainiously which is a very complex task

3. Interfaces

   • Graphical User Interface

4. Interfaces

   • GUI
     • This is used by phones and computers operating systems
   • CLI
     • The user types commands and it comes out as text.