What is DOS?

Command Prompt (DOS)

MS-DOS is a single user, single tasking and character user interface (CUI) operating system. It creates a text environment for the computer. To do any work on DOS we have to give commands to the computer. It is and operating system with a command line interface used on personal computers. You type MS-DOS commands using a command prompt window. MS-DOS commands are typed at an entry point identified by a blinking cursor.

To get command through Windows operating system, we do the following

  • Open a Command Prompt,
  •  Click on the Start button.
  •  Click on All programs.
  •  Choose Accessories.
  • And then click on Command Prompt.

Shortcut key to open DOS:- Click start and type command or CMD and press ENTER or Press window button +R and type Command Prompt and press ENTER.

What is DOS, DOS, DIsk operating system, Command Prompt, DOS commands

System Prompt:-System prompt represents the current drive and folder.

Cursor:- Cursor is a blinking bar just after the system prompt which represent the position on the screen where the character will be type.

DOS commands:- Commands are the instructions given to the computer to do any work. There are two types of commands.

1) Internal Commands

Internal Commands are also called memory resident commands because these commands are automatically loaded on the memory at the time of booting. All the internal commands are stored in the file Command.com.

2) External Commands

External Commands are also called disk resident commands are separately stored on the disk external command requires their special file to be executed.


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