1. Operating Systems AOIT Principles of Information Technology

2. Operating Systems Serve Five Main Functions Operating systems serve five main functions: Provide a user interface Organize files Manage applications Manage hardware Repair/restore computer functionality What operating systems are running at your school?

3. There Are Several Kinds of Operating Systems There are many operating systems for users to choose from. What operating systems have you used before? Windows, made by Microsoft, is the market leader. Another popular choice is Linux, an open source operating system. Linux

4. An OS Can Be Proprietary or Open Source Microsoft’s Windows operating system is proprietary— this means users pay a fee to use the software and receive customer and technical support in return. Open source software, like the Linux-based Ubuntu, is free, but comes without formal customer or technical support. vs. Both systems have benefits. Which would you choose?

5. Operating Systems Have a User Interface A typical Windows desktop

6. Operating Systems Have a User Interface A machine running the Linux- based Red Hat operating system

7. Operating Systems Make It Easy to Organize Files Windows uses a folder system to organize files

8. Operating Systems Make It Easy to Organize Files This Linux user manages files with folders, icons, and buttons; the organization resembles a web browser

9. OS Utilities Help Users Handle Basic Tasks This Windows utility helps a user back up files

10. OS Utilities Help Users Handle Basic Tasks This Linux Ubuntu setup is very basic but offers the user full functionality

11. Operating Systems Help Manage Hardware Windows helps users manage hardware such as a keyboard

12. Operating Systems Help Manage Hardware This Linux user can easily keep track of each storage device installed on the machine

13. An Operating System Helps Manage Applications Windows XP application manager

14. An Operating System Helps Manage Applications Linux Red Hat’s application manager

15. Photo Credits The image of the Windows logo on Slide 3 and the image of the Linux logo on Slide 3, which was designed by Larry Ewing, lewing@isc.tamu.edu using GIMP, can can be accessed on wikipedia.org and are reproduced here under the terms of the GNU Free Documentation License. Permission is granted to copy, distribute and/or modify these images under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is available at http://commons.wikimedia.org/wiki/Commons:GNU_Free_Documentation_License.lewing@isc.tamu.eduhttp://commons.wikimedia.org/wiki/Commons:GNU_Free_Documentation_License The image on Slide 9 is available at http://www.microsoft.com/protect/yourself/data/backup.mspxhttp://www.microsoft.com/protect/yourself/data/backup.mspx The image on Side 10 is available at http://www.gnuman.com/screenshots.html?page=inline&id=721 and is reproduced here under the terms of the GNU General Public License, version 2.0.http://www.gnuman.com/screenshots.html?page=inline&id=721 The images on slides 5, 7, 11, and 13 were compiled by Marcin Wichary and are used here with his permission. They can be accessed at http://www.guidebookgallery.org/screenshots/winxpprohttp://www.guidebookgallery.org/screenshots/winxppro The images on slides 6, 8, 12, and 14 were compiled by Marcin Wichary and are used here with his permission. They can be accessed at http://www.guidebookgallery.org/screenshots/gnome220redhat9 http://www.guidebookgallery.org/screenshots/gnome220redhat9