The original operating system for IBM PC compatible computers. It is the basic for the current Windows operating system. When people use the term DOS, they are commonly referring to Microsoft DOS or ...

The first OS installed in a computer. In a virtual machine environment, there may be a host operating system that interacts with the virtual machine monitor, which manages the virtual machines.

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.

If you don't know what the Linux desktop operating system is, or if you're new to it, Jack Wallen's quick explainer will get you up to speed. Linux. What is it? At one point in time it was a niche ...

What are open-source operating systems? Underpinning an operating system, for example Windows on your PC or Android on your phone, is many, many lines of code. Allowing anyone to inspect the source ...

Apple created the operating system iOS for its iPhone. Since its debut, Apple has unveiled new versions of the software regularly, often adding and enhancing features. iOS was unveiled with the ...