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PC Operating Systems

PC Operating Systems. PC Operating Systems. What’s the difference between Windows and Linux?. PC Operating Systems. PC Operating Systems. PC Operating Systems. IV. PC OSs. A. Windows see chapter 13. PC Operating Systems. 1. historical development. a. 1980s - DOS b. 1990s - Win9X

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PC Operating Systems

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  1. PC Operating Systems

  2. PC Operating Systems What’s the difference between Windows and Linux?

  3. PC Operating Systems

  4. PC Operating Systems

  5. PC Operating Systems IV. PC OSs • A. Windows • see chapter 13

  6. PC Operating Systems 1. historical development • a. 1980s - DOS • b. 1990s - Win9X • c. 2000s - Win32

  7. PC Operating Systems 2. architecture • a. hardware support • ring 0 • ring 3

  8. PC Operating Systems 2. architecture b. virtual machines backward compatibility

  9. PC Operating Systems 2. architecture c. structure kernel shell GDI

  10. PC Operating Systems 3. memory management • a. virtual memory

  11. PC Operating Systems IV. PC OSs • B. Palm OS

  12. Sassn2 good examples • Error handling implemented • Default drive letter provided

  13. Sassn2 good comments! • 'PROGRAM REQUIREMENTS: • 'Create a WSH VBScript which displays the total drive size and • 'the free space available based on the drive of the users choice. • 'The information should be displayed in a user friendly manner. • '(ie. information w/in same output window and on separate lines) • 'Also, display one additional line of information regarding the • 'drive to the user - I decided to display the percentage of free • 'space • 'Known Error: If you enter an invalid drive letter the program crashes • 'Error handling needs to be implemented

  14. Sassn2 • Multi-line output (a): • NewLine = Chr(13) & Chr(10) • Msg = msg & NewLine

  15. Sassn2 • Multi-line output (b): • Msg = msg & vbCrLf

  16. Sassn2 • Format output: • FormatNumber(drive.TotalSize/1024,0)

  17. Sassn2 • Useful informaion: • drive.DriveType • but not … serial number

  18. PC Operating Systems Windows System Monitor perfmon

  19. PC Operating Systems perfmon = performance monitor both a troubleshooting and learning tool

  20. PC Operating Systems

  21. PC Operating Systems E. • Comment here …

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