Understanding Types & Functions of Operating Systems

1. DOS and window operating system Unit-2

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 Operating system multiuser multitasking multiprocessing multithreading

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

7. Window

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