Graphical User Interface - in other words, the on screen commands that you interact with.
The short answer is that the screen is touch sensitive. The operating system responds in ways that satisfies the touches and gestures that the user make on the screen.
(a) User interface (b) language translator (c) platform (d) screen saver
single user os are those os where only one user access the resources of the operating system at a time .the resources of operating system 'll not allocate to any other user.multi user operating system is that operating system where the resources of operating system can be accessed by more than one user at a time ,means to say; multi users can access the operating system simultaniously or any other way.network user operating system is also the multi user operating system but the different is that the users are geographically remote user connected through a network media but share the same capy of operating system
time sharing operating system is user interactive, but multiprogramming operating system need not be user interactive
user interface
User Interface
what is system view in operating system
An operating system provide an interface between the user and hardware. operating system is a platform in which all the user applications can run
User Interface
virtualization
user interface