Have you been trying to find out the answer to the question, what is an operating system? A lot of people have no idea what this is, but you are about to have it explained to you using basic terms that anyone can easily understand. Basically, the operating system is the software inside of a computer that consists of data and programs that help the computer run. This system helps to manage the computer hardware and to provide services for the actions of the many pieces of the application software like, media players and word processors. The one thing that you have to understand is that without an operating system, no computer is going to work because without it a computer will not run right.