LIMITATION OF DOS

Limitations of MS-DOS:-

            Though MS-DOS was popular for microcomputer during 80s but its popularity is decreasing due to following limitations:

1. Its command line interface is difficult to learn
2. Its filenames are limited up to 8 characters i.e.it does not support long file names
3. It cannot take advantage of high speed processors.
4. It cannot take advantage of large memory space available these days because it only supports limited memory upto 640 KB knowns as conventional memory.
5. It is single user and single tasking operating system.

Using Keyboard in DOS

            DOS is CUI based operating system .A keyboard is principal character input device.So keyboard is extensively used while working DOS.Some useful key combinations are as follows:

Key combination	Purpose
Ctrl+C	Breaks the command execution
Ctrl+S	Pauses the command execution
Ctrl+break	Breaks the command execution
Ctrl+Alt+Del	Restarts the computer
Enter	Executes the command
Esc	Cancels the command

MS-DOS Prompt:-

            DOS Prompt is visual indication from the MS-DOS command processor that the operating system is ready to accept a new command.The default prompt appears as default drive followed by \(slash) and>(greater than) such as C:\>