1. Introduction & Operating Systems Introduction & Operating Systems CS105 Spring 2010 # 1 What a computer is? What cheating is? What a GUI is? Do you know:

2. Introduction Housekeeping—Changes to Syllabus Grading—three MPs and three exams Handing in work online CS105 Spring 2010 # 2 https://agora.cs.uiuc.edu/display/cs105/

3. Writing an email to an instructor Go to Web Preferences Add a Signature! Include earlier email in yours CS105 Spring 2010 # 3

4. What is a computer?computer CS105 Spring 2010 # 4 This course only deals with electronic computing machines

5. Computers have REALLY changed over time! CS105 Spring 2010 # 5

6. Hardware – “The parts of a computer system that can be kicked.” —Henri Karrenbeld – Example of a kicking Example CS105 Spring 2010 # 6

7. Hardware CS105 Spring 2010 # 7 Inputs RAM Chip keyboard Outputs CPU on a chip – the Microprocessor (s) ROM built in, BIOS

8. You will read about secondary storage in your text. Secondary storage includes hard drives, CD-ROMs, DVDs, and Flash Memory cards like you find in cell phones, digital cameras, etc. Most secondary storage will maintain its data without any external source of power. See Unit B in your Computer Concepts book, Computer Hardware # 8

9. What can do wrong with hardware? Memory, disks, CD-ROM drives, floppy drives, video cards, mother boards, CPUs, fans, power supplies, monitors, disk controllers can all FAIL! Rarely, chips can make calculation errors. # 9

10. # 10 Software in a Computer computer hardware Windows Vista Applications Software : Instructions or Computer Programs Hardware: Electronic Devices & Circuits

11. # 11 What is an Operating System? Hardware needs a manager to tell it –what to do –when to do it –how to do it The (OS) controls all A: Input B: Output C: processing It manages the data and the memory and appearance

12. Operating Systems Software # 12 Windows Vista UNIX (LINUX) Mac OS X Handhelds -- Palm OS UNIX for email servers iPods

13. Power of an Operating System An operating system produced by one company can intentionally make it difficult to use software programs produced by another company For those people wary of Microsoft, Linux is a free Unix-type operating system originally created by Linus Torvalds with the assistance of developers around the world. More information here: http://www.linux.org/http://www.linux.org/ # 13

14. Interface—Graphical, using Icons # 14 The iPhone has an unusual user interface (for a phone)--GUI

15. Cheating The penalty for cheating will be 0 on the MP or exam, an F in the course if caught twice. Passively allowing someone to copy your work is cheating. More than 3 students working on an MP is cheating. It is cheating to show an MP or honors project to someone else. Ignorance of the law is no excuse… http://admin.illinois.edu/policy/code/article_1/a1_1-402.html CS105 Spring 2010 # 15

16. More on cheating Question: Am I cheating if another group turns in my work and says they did it? Yes. We are not blessed with "lie detectors.“ Keep other people out of your laptop or computer, keep it password protected. *Don’t tell people your password (duh) CS105 Spring 2010 # 16

17. To Summarize: What is a computer ? What is a GUI? What is cheating? CS105 Spring 2010 # 17