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Introduction & Operating Systems

Do you know:. Introduction & Operating Systems. What a computer is? What cheating is? What a GUI is?. Introduction . https://agora.cs.uiuc.edu/display/cs105/. Housekeeping—Changes to Syllabus Grading—three MPs and three exams Handing in work online.

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Introduction & Operating Systems

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

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

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

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

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

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

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

  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

  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.

  10. Software in a Computer Applications WindowsVista computerhardware • Software : Instructions or Computer Programs • Hardware: Electronic Devices & Circuits

  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 iPods Handhelds -- Palm OS Windows Vista UNIX (LINUX) Mac OS X UNIX for email servers

  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 LinusTorvalds with the assistance of developers around the world. • More information here: http://www.linux.org/

  14. Interface—Graphical, using Icons 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

  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

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

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