1. Lecture 16: Operating Systems Intro to IT COSC1078 Introduction to Information Technology Lecture 16 Operating Systems James Harland james.harland@rmit.edu.au

2. Lecture 16: Operating SystemsIntro to IT Introduction to IT 1-4 Introduction, Images, Audio, Video 5-6 Computer Fundamentals Assignment 1, WebLearn Test 1 7 Review 8 Operating Systems WebLearn Test 2 9 Operating Systems Assignment 2 10 Internet 11 Internet Security WebLearn Test 3 12 Future of ITAssignment 3, Peer and Self Assessment

3. Lecture 16: Operating SystemsIntro to IT Overview  Questions?  Assignment 2  WebTest 2  Operating Systems  Questions?

4. Lecture 16: Operating SystemsIntro to IT Assignment 2  Now in the Learning Hub  Assumes you are using Audacity  If not, please see me asap  Seems a lot, but shouldn’t be too hard once you have Audacity and your files  CD task requires CD reading software Windows: ImgBurn www.imgburn.com Mac: Burn, Toast Linux: ImgBurn via Wine, or K3B, Brasero, Nero, …

5. Lecture 16: Operating SystemsIntro to IT WebTest 2  Now open  Based on Computer Fundamentals material  Some questions slightly different to what we have covered

6. Lecture 16: Operating SystemsIntro to IT Where to begin? How do you start an operating system? Boot it! (or bootstrap)  Turn on power ( )  Machine loads bootstrap program from ROM (non-volatile memory)  Bootstrap program loads OS  OS takes over

7. Lecture 16: Operating SystemsIntro to IT Initial State When Turned On Program Counter Instruction Register 00 ROM RAM ProcessorMemory Disk Bootstrap Program 00

8. Lecture 16: Operating SystemsIntro to IT Load Bootstrap Program Program Counter Instruction Register 00 ROM RAM ProcessorMemory Disk Bootstrap Program 00

9. Lecture 16: Operating SystemsIntro to IT Bootstrap program loads OS Program Counter Instruction Register 00 ROM RAM ProcessorMemory Disk Bootstrap Program 00

10. Lecture 16: Operating SystemsIntro to IT Bootstrap program loads OS Program Counter Instruction Register 00 ROM RAM ProcessorMemory Disk Bootstrap Program 00

11. Lecture 16: Operating SystemsIntro to IT Bootstrap program has loaded OS Program Counter Instruction Register AA ROM RAM ProcessorMemory Disk Bootstrap Program 00 AA

12. Lecture 16: Operating SystemsIntro to IT OS takes over execution Program Counter Instruction Register AA ROM RAM ProcessorMemory Disk Bootstrap Program 00 AA

13. Lecture 16: Operating SystemsIntro to IT Starting Up Operating Systems Program Counter Instruction Register AA ROM RAM ProcessorMemory Disk Bootstrap Program 00 AA

14. Lecture 16: Operating SystemsIntro to IT Starting Up Operating Systems Program Counter Instruction Register AA ROM RAM ProcessorMemory Disk Bootstrap Program 00 AA

15. Lecture 16: Operating SystemsIntro to IT Starting Up Operating Systems Program Counter Instruction Register AA ROM RAM ProcessorMemory Disk Bootstrap Program 00 AA

16. Lecture 16: Operating SystemsIntro to IT Multiple boot scenario … Program Counter Instruction Register 00 ROM RAM ProcessorMemory Disk Bootstrap Program 00

17. Lecture 16: Operating SystemsIntro to IT Multiple boot scenario … Program Counter Instruction Register 00 ROM RAM ProcessorMemory Disk Bootstrap Program 00

18. Lecture 16: Operating SystemsIntro to IT Multiple boot scenario … Program Counter Instruction Register 00 ROM RAM ProcessorMemory Disk Bootstrap Program 00

19. Lecture 16: Operating SystemsIntro to IT Multiple boot scenario … Program Counter Instruction Register 00 ROM RAM ProcessorMemory Disk Bootstrap Program 00

20. Lecture 16: Operating SystemsIntro to IT Processes

21. Lecture 16: Operating SystemsIntro to IT OS Software Classification Software SystemApplication Utility Kernel Operating System Shell

22. Lecture 15: Operating SystemsIntro to IT Conclusion  Work on Assignment 2  Web Quizzes and Web Test 2  Finish reading book!