About this Book
Every Personal Computer (PC) you buy has to have an Operating System. This is the master program that enables the machine to carry out the routine, usually very simple, functions that make it work and enable it to run the programs you purchase. The most popular operating system is called MS-DOS. When you have finished this training course you should be able to use the important DOS commands and will then be able, should you wish to do so, to use some of the more complex and sophisticated commands that you will find in the DOS handbook that comes with every PC you buy.