An operating system is the foundation of any computing system, controlling the input and output of data and ensuring that different programs and devices work together effectively. Examples of ...

The control program in a user's machine (desktop or laptop). Also called a "client operating system," Windows is the overwhelming majority while the Mac comes second. There are also several versions ...

A system software component that is external to the operating system kernel. If the phrase is used to refer to the operating system itself, it is redundant because an operating system "is" software.

Whether it's a desktop or laptop computer, a smartphone or a video game system, every modern computer needs an operating system. That's the core software on the computer that sits between application ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Doretha Clemons, Ph.D., MBA, PMP, has been a ...