1. CSI 400/500 Operating Systems Spring 2009 Lecture #1 – Operating System Fundamentals Wednesday January 21, 2008

2. OS Body

3. OS Forms

4. OS Shell Command based Simple Interface Text output Example: Unix sh

5. GUI Graphical User Interface Event driven Display items cause events to occur Example: MS Windows

6. DBMS Database Management Systems Translates data commands into system functions Can be text or graphical Examples: SQL, PowerBuilder

7. Driver Library Selection of different functional kernels Correct kernel chosen by system –Often given parameters to consider Example: Linux

8. OS Strategies

9. Batch Systems Sequence of commands Self-contained No interaction Still used today Example: IBM JCL

10. Timeshare Systems Multi-user, “ single ” processor Limited access Large jobs run in background Examples: IBM TSO, Plato

11. Workstations Modern personal computer Independent or networked Separate processor

12. Networks Join workstations and data resources Access control New concerns Example: WWW

13. Embedded Systems Control system Self-contained Self-correcting Real time system Examples: satellites, power stations, autos

14. PDAs Personal digital assistant Small handheld workstation Focused on communication