1. DOS and window operating system
Unit-2
DOS and window operating system

2. What is operating system
An operating system is the system software that acts as an interface between the user and the computer hardware.

4. Functions of operating system
Disk management
Device management
Memory management
File management
Error management
Job control
Processor management
Provision of user interface
Security & protection
Enforcement of priority system

5. Operating system classification
multiuser
multitasking
multiprocessing
multithreading

6. Types of operating systems are:
Linux
Unix
MS DOS
MS Windows

7. Window Components Description Control panel
Allow user to view and change basic system setting & control, such as adding hardware, adding and removing software.
Device manager
Allows the user to display and control the hardware attached to the computer.
Disk defragmentation
Rearrange files stored on a hard disk
Window explorer
Provides an interface for accessing the file system, launching application etc.
Start menu
Allow user to launch an installed application.
taskbar
The bar at the bottom of the screen is called taskbar. It is used to launch &monitor applications.

8. Features of Window The desktop is the background of the window.
It contains a set of icons, files, folders, etc.
It has a bar at the bottom of the screen known as taskbar.
Taskbar has some icons to launch programs easily.
The taskbar has start button.
It has date and time at bottom right on the screen, we can easily change the date and time.
It has the notification area that provides some additional information.
We can change the display of the desktop .
The screen resolution can be change using desktop display settings.

9. MS DOS:
MS DOS stands for Microsoft disk operating system. It is a character user interface in which there is no graphical devices like mousse.
MS DOS uses 2 type of command
Internal command
External command.

10. DOS command are divided into two:

11. Commands in MS DOS

12. Commands in MS DOS

13. Thank you