The operating system I have known are Microsoft WINDOWS MAC LINUX IOS ANDROID.

The operating system I have used for computer now is Windows which is made by Microsoft and IOS for mobile phone.

Windows:

Windows use the graphical mode GUI which is more convenient than the DOS. Now I am using the WINDOWS10 in my computer. It has an efficient multi-desktop multi-tasks and multi-windows. In this system you can put 4 windows in the screen.

IOS:

IOS is a mobile operating system made and