Object-oriented operating system

An Object-oriented operating system is an operating system that uses the concept of WIMP (Windows, Icons, Menus, Pointer or Windows, Icons, Mouse and Pull-down Menus depending on your text). Such systems use an XY pointing device like a mouse to direct a cursor (pointer) on the screen. Most, if not all, desired actions are achieviable by manipulation of objects on screen through the WIMP concept.

Windows and Mac OS are two commonly used examples of object-oriented operating systems.