Applications "talk to" the operating system for all user interface and file management operations. Also called an "executive" or "supervisor," an operating system performs the following functions.

The kernel plays an essential role, as it manages how your phone, tablet, and PC's hardware and operating system.

An operating system is a collection (or suite) of programs that manages and controls the computer. Operating systems have many functions: ...

How Scientists Respond to Science Deniers I think the diagram is just trying to emphasize that operating system functions are usually invoked through a different mechanism then a simple library call.

Kylin Software Co. Kylin Software Co launched a next-generation proprietary operating system (OS), Kylin V11, in Beijing on ...