Skip to main content


Showing posts from October, 2011


Disk Operating System is a set of computer programs and it is popularly known as DOS. The main functions of DOS  are to manage disk files, allocate system resources according to the requirement. DOS provides features essential to control hardware devices such as Keyboard, Screen, Disk  Devices,  Printers, Modems and programs. What is File ?
In computer terminology, a file is a collection of text, data or information stored on a storage device, such as hard disk, floppy disk, or CD/DVD.
What is directory ? A directory is nothing but what we call a folder. It is a named space or section of the storage area of the disk which is need to store files. The directory serves the purpose of organizing the files in a better manner.

Some DOS Commands ::
cls - to clear the screen  date - to see or adjust the current date time - to see or adjust the current time md - to make a directory cd - to enter into the directory copy - to copy a file or folder move - to move a file from one directory to anot…


Since this the era of technology where computer plays a vital role. Now computer becomes most essential part of everyone's life. In USA and UK, you will find PC in every ones house. But in India it is still to touch everyone. But the scenario is gradually changes and people of a village also starts using computers for their different works. But very few of them know the definition of computer.
Definition of Computer
So the computer is a digital electronics device which can accepts data through its input devices like keyboard and mouse and process that data internally without human intervention and produce results through its output device like monitor and printer. In definition of computer we have got few new terms like input device and output device. 

What is input device ?
Input devices are those through which the process of entering data and programs in to the computer system.       e.g. Keyboard, mouse, scanner, joystick etc.
What is output device ?
Output devices are those thro…