DOS
It stand for Disk Operating System DOS is a set of programs , which is used to activate all components or parts of computer system , is known as Disk Operating System (DOS )
COMMAND :- ( Command is in MS DOS written program which is use to run fix task of program )
A set of instruction is known as command. There are two types of commands.
1. INTERNAL COMMAND
2. EXTERNAL COMMAND
1. INTERNAL COMMAND :
There are the simplest and the most commonly used commands which execute immediately. There commands at the part of Command . Com file. They get loaded in the memory along with MS DOS system at the time of booting.
For Example :- Date , Time , Dir , Vol , Ver etc.
1) Vol :- This command is use to display the volume of target disk.
2) Label :- This command is use to change the current volume of target disk.
3) Ver :- This command is used to display the version of MS DOS.
2. EXTERNAL COMMAND :
The command which requires some special DOS files for execution is called external commands.
For Example :- Move , Copy , Rename , Edit , Formate etc.
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