| DOS stands for Disk Operating System. |
| DOS controls the computer’s hardware and provides an environment for programs to run. This system program must always be present when working with our computer. |
| There are a variety of reasons why we need DOS. A few of them are listed below to satisfy our curiosity. |
| 1. DOS controls the flow of information between us and the computer (translator). |
| 2. DOS allows us to store information on your computer. |
| 3. DOS allows us to retrieve information stored on our computer. |
| 4. DOS interprets and translates the software us have on our computer. |
| 5. DOS gives us access to all its function (i.e. saving, copying, and printing files). |
| 6. DOS is not case sensitive; therefore, a command can be entered in with CAPITAL LETTERS, lower-case letters, or a MiXtuRe of the two. |