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Lesson No: 5 Operating System & MS-DOS

CHBT-01 Basic Micro process & Computer Operation. Lesson No: 5 Operating System & MS-DOS. O.S. & MS-DOS.

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Lesson No: 5 Operating System & MS-DOS

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  1. CHBT-01 Basic Micro process & Computer Operation Lesson No: 5 Operating System & MS-DOS

  2. 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

  3. O.S. & MS-DOS MS-DOSis 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. COM2. 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 PromptTypes of CommandInternal Command : Command. COM file contains All internal command. e.g. CLS, DATE, TIME, VOL, VER, MD, CD, CD.., CD\, COPY CON, REN, COPY, TYPE, PromptSyntax: CLSe.g. : C:\> CLS It is used for clearing the screen.

  4. 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.

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