Disk Operating System Software

As mentioned earlier, after ROM Booting the CPU of personal computer searches for Hard Disk or CD in respective drives in sequence for the Operating System to be installed in its RAM. Technical Data used in the field explained in computer courses in Rawalpindi. The operating system is to be provided by either of these two disks, and hence it is called the Disk Operating System (DOS).

From this DOS software the CPU reads and loads into its memory the basic commands of the operating system. Then with its help it knows what to do with the commands (as defined under DOS) you enter them. It also knows how to execute commands written in the application programmers, which we may run. There are various types of DOS software –- most common is the Microsoft DOS known as MS -DOS. Some more details of computer courses in Rawalpindi are as under.

Others are Linux, Macintosh, etc. We shall restrict ourselves to MS -DOS environment only. Nowadays you don’t have to learn DOS commands to operate the compute r. Almost all the commands, like, open, run, close, exit, copy (read), paste (write), delete, etc., which you would usually require to give, now come under Microsoft DOS Windows as Menu Driven with Icons and Menus displayed in window screens in the Monitor . These you may select by singlemouse click or select and run by double mouse click in quick succession.

Note that the operating system software provides only the basic operational rules for working and also optimizing the functions and the overall system management. With it you can define and operate the

machine, but really cannot do any other jobs that are to be done by application programme within the

environment of the operating system. Hence, remember, an application program or software that runs under one DOS may not run under another DOS as such. TSK Training for Skills and Knowledge is the best institute in Rawalpindi Islamabad for Pakistani Students who wants to join computer courses in Islamabad.