Transcript OS & MS-DOS - ITI Ankleshwar

CHBT-01 Basic Micro process & Computer Operation
Lesson No: 5
Operating System & MS-DOS
O.S. & MS-DOS
Definition of O.S. :
The OS is the first thing loaded in to the computer,
without the OS a computer is useless. The purpose of an
OS is to organize and control H/W and S/W so that the
device it lives in behaves in a flexible. The O.S. is an
interface between user and computer.
e.g. DOS, Windows, Lenux, UNIX etc.
Booting up the Computer :
In computing, booting is a bootstrapping process
that starts OS when the users turns on a computer system.
A boot sequence is the set of operations the computer
performs when it is switched on which load an OS
O.S. & MS-DOS
MS-DOS is an OS which is developed by Microsoft Corporation ,USA. The
latest version of MS-DOS is 6.22.
Main files for Booting up the System :
1. Command. COM
2. MS-DOS.SYS (hidden)
3. IO.SYS (hidden)
Command Prompt : When booting process is competed, you can see a
prompt like C:\>. It is called Command Prompt or DOS Prompt
Types of Command
Internal Command : Command. COM file contains All
internal
command.
e.g. CLS, DATE, TIME, VOL, VER, MD, CD, CD.., CD\, COPY CON,
REN, COPY, TYPE, Prompt
Syntax: CLS
e.g. : C:\> CLS
It is used for clearing the screen.
O.S. & MS-DOS
2. External Command : Each & Every External command is in its
separate file with the extension .exe, .com, .sys
e.g. : Tree, chkdsk, print, xcopy, label, attrib, edit, backup, restore
Syntax : Print <filename>
e.g. : C:\>Print Biodata.txt
Batch File
List of Sequential command in it.
The extension name of batch file is .bat
When you want to run batch file you type only primary name of batch
file on command prompt.