Intro about the operating system

1. Operating System
An Overview
1

2. Operating system
♣ A program that controls the execution of
programs
♣ An interface between a user and hardware
♣ an Operating System is a computer program
that manages the resources of a computer.

3. Services provided by operating
system
♣ program execution
♣ i/o operations
♣ file system manipulation
♣ communication
♣ error detection

4. Objectives of operating system
♣ convenience
♣ efficiency
♣ ability to evolve

7. User interaction with computer
♣ GUI(graphical user interface)
♣ CUI(command user interface)
♣ WUI(web based user interface)
♣ TUI(touch user interface)

9. operating system in mobile
♣ Support multiple screens
♣ Convenient
♣ Faster and smoother
♣ Updated
♣ Feasible display

10. Services by operating system to
accounting
 Collect usage statistics
 Monitor performance
 Used to anticipate future enhancement
 Used for billing purpose