What is an operating system? This is a question that many people wonder about when they are using their computer each day. When you understand your basic operating system, you will have a better understanding on how your computer really works. The software that is located on the internal part of your computer is basically your operating system. There are some other terms that you will want to familiarize yourself with to understand the components of this software. These are the basic parts of computers that people use each day. There are programs that compose your operating system that help your computer run efficiently and make this computer more user friendly.