1. Howstuffworks "How Operating Systems Work" The operating system controls every task a computer carries out. Learn how your operating system manages applications so you can multitask without a crash! Computer Software. How operating systems Work. by Curt Franklin . Introduction to How operating systems Work http://www.howstuffworks.com/operating-system.htm

ComputerStuff AutoStuff ElectronicsStuff ScienceStuff ... PeopleStuff Top Subjects CD Burners Home Networking RAM Computer Viruses ... Web Servers Sponsored By: Categories Hardware Internet Peripherals Security ... Browse the Computer Library Explore Stuff Lidrock.com Big List of Articles Get the Newsletter Shop or Compare Prices ... Search HSW and the Web Search Google Main Computer Software How Operating Systems Work by Curt Franklin Table of Contents Introduction to How Operating Systems Work The Bare Bones Wake-Up Call Processor Management Memory and Storage Management Device Management Interface to the World The Future Lots More Information Shop or Compare Prices The operating system defines our computing experience. It's the first software we see when we turn on the computer, and the last software we see when the computer is turned off. It's the software that enables all the programs we use. The operating system organizes and controls the hardware on our desks and in our hands, yet most users can't say with any certainty precisely what it is that the operating system does. Box shot reprinted with permission from Microsoft Corporation Microsoft Corporation Microsoft XP operating system In this article, we'll tell you what a piece of software must do to be called an operating system, and show you how the operating system works to turn a collection of hardware into a powerful computing tool!

2. Operating Systems Project Information This Webpage has been discontinued. Unfortunately, I no longer have time to maintain the webpages on operating system projects. pages, however, contain more upto-date information on operating systems. These include support, object-oriented and extensible operating systems. Work in Adaptive operating systems http://www.cs.arizona.edu/people/bridges/oses.html

This Webpage has been discontinued Unfortunately, I no longer have time to maintain the webpages on operating system projects. In fact, I haven't updated the entries on the original page for well over 2 years, and it seems unlikely that I will be able to resume doing so in the near future. Several other pages, however, contain more up-to-date information on operating systems. These include: Sven Paas' OSes Page The TUNES OS Review Page Yahoo's OS Pages Research projects in object-support, object-oriented and extensible operating systems Work in Adaptive Operating Systems Single Address Space Operating Systems Archive Back to Patrick Bridges' Home Page

3. The FreeBSD Project networking, performance, security and compatibility features today which are still missing in other operating systems, even some of the best commercial ones. http://www.freebsd.org/

Select a server near you: IPv6 Austria IPv6 Denmark IPv6 Germany IPv6 Japan IPv6 Norway IPv6 United Kingdom IPv6 USA/1 IPv6 USA/2 Argentina Australia/1 Australia/2 Austria/1 Austria/2 Belgium Brazil/1 Brazil/2 Brazil/3 Canada/1 Canada/2 China Costa Rica Czech Republic Denmark/1 Denmark/2 Estonia Finland/1 Finland/2 France Germany/1 Germany/2 Germany/3 Greece/1 Greece/2 Hong Kong Hungary/1 Hungary/2 Iceland Indonesia Ireland/1 Ireland/2 Italy/1 Italy/2 Japan Korea/1 Korea/2 Kuwait Latvia Lithuania Netherlands/1 Netherlands/2 New Zealand Norway/1 Norway/2 Philippines Poland/1 Poland/2 Portugal/1

4. Operating System Concepts - 6th Edition John Wiley Sons, Inc. ISBN 0471-41743-2 Face The Real World of operating systems Fully Equipped. We have switched to a new URL http//os-book.com. Please mark this as the new URL for the Operating System Concepts book. Operating System Concepts Sixth Edition. Abraham SilberschatzPeter Baer GalvinGreg Gagne http://www.bell-labs.com/topic/books/os-book

Operating System Concepts Sixth Edition Abraham Silberschatz Peter Baer Galvin Greg Gagne We have switched to a new URL http://os-book.com . Please mark this as the new URL for the Operating System Concepts book. Last updated January 21, 2003.

5. Operating Systems Through Time (8-bits) A brief history of 8bit operating systems. http://www.armory.com/~spectre/tech.html

8-Bit Operating Systems This was originally printed in the last issue of Link Magazine , and is reprinted here, with updates, by the author. I finally got off my duff and incorporated all the mail people have been sending me. A few more changes are yet to be made; keep that mail coming. Please do note that, as my consciousness of computer history expands, the title is becoming increasingly inaccurate. For example, I mention nothing of mainframe or minicomputer OSes (mostly due to ignorance) and so I should probably call this " Home Computer Operating Systems Through Time" even though not all of these OSes are purely home computer machines, particularly CP/M. The title is left for historical reasons, though. New changes were last made September 2003. If you have more information about these computer systems, or have info on other systems not mentioned, please mail the maintainer Back to the Computer Workshops home page Correction: The original TRS-80 Model I had a 64x16 screen, though the Model II apparently did have the 80 column one. Thanks to Ricardo Banffy for the correction. Also, I should have been a little more circumspect when I said "underpowered" certainly when the TRS-80s first emerged, when their major competition was the Commodore PET and Apple I/II, they were most certainly

6. Computer Operating Systems Helping you with questions you may have about computer operating systems as well as linking you to all the major computer operating systems. progressed and developed so have the types of operating systems. Below is a basic list of different types of operating systems and a few examples of operating systems that fall http://www.computerhope.com/os.htm

Search Other Pages Home Site map Computer help Dictionary ... What's new Tools E-mail this page Print Preview Edit this page OPERATING SYSTEMS QUICK LINKS Operating System ABCs Operating System types Operating System overviews Troubleshooting ... Microsoft news OPERATING SYSTEM ABCs An Operating System or OS is a software program that enables the computer hardware to communicate and operate with the computer software. Without a computer Operating System a computer would be useless. OPERATING SYSTEM TYPES As computers have progressed and developed so have the types of operating systems. Below is a basic list of the different types of operating systems and a few examples of Operating Systems that fall into each of the categories. Many computer Operating Systems will fall into more then one of the below categories. GUI - Short for Graphical User Interface a GUI Operating System contains graphics and icons and is commonly navigated using by using a computer mouse. See our

7. OSRC: The Operating System Resource Center Extensive information about booting, file systems, memory, architecture, and interfacing with other devices. http://www.nondot.org/sabre/os/articles

the Operating System resource center ...Software... The Boot Process Boot sectors, bootable CD-ROMs, examples.. Partitions Partition Table Layout, Partition IDs.. File Systems EXT/[23], Reiser, Joliet, FAT32, HPFS.. Memory Management EMS, XMS + Techniques.. Protected Mode VCPI, DPMI, GEMMIS, VDS, VOODOO, etc.. Executable File Formats .com, .exe, .lib, .obj, a.out, ELF, LE, PE.. Plug and Play Specs BIOS, Serial, Parrellel, ISA, Firewire.. Device Driver Interfaces Uniform Driver Interface, linux drivers.. Miscellaneous Software OS FAQ, overall design, VM design, threads.. ...Hardware... Processor Architecture IA64, MMX, 3D-Now!, KNI, copro, optimization.. Interconnect Buses ATA-2,3, Floppy, PCI, AGP, USB, SCSI, FC-AL.. Disk and Disc Drives Floppys, Hard Drive Ports, CHS, CD-ROM.. Human Interface Devices Keyboard, Mouse, Joystick, Gamepad.. Sound Devices SB, SB16, GUS, PAS, PC-Speaker, MIDI, OPL.. Communication Devices Serial, Parallel [SPP, EPP, ECP].. Networking Devices Miscellaneous Devices PIC, PIT, DMA, RTC, .. Other Hardware Legos, ATX, NetPC's.. 4/13/2004 Update: If you are looking for a powerful compiler for your OS development, check out the

8. Operating System Sucks-Rules-O-Meter This operating system quality and approval metric is based on a periodic AltaVista search for each of several operating systems, directly followed by "sucks", "rules http://srom.zgp.org/

Operating System Sucks-Rules-O-Meter Don Marti media empire sucks rules, rocks AmigaOS BeOS FreeBSD Linux Mac OS Mac OS X NetBSD NetWare OS/2 OS/400 OpenBSD Solaris Unix VMS Windows Updated Sun Jun 6 08:03:32 2004 GMT. About the Operating System Sucks-Rules-O-Meter This operating system quality and approval metric is based on a periodic AltaVista search for each of several operating systems, directly followed by "sucks", "rules", or "rocks". We search for all operating system names exactly as shown above, with the exceptions of Mac OS , Mac OS X, and VMS. For Mac OS, we add the search results for the incorrect but common spelling "MacOS". Because Mac OS X is sometimes abbreviated to simply "OS X", the Mac OS X search is just for "OS X" we have not found other instances of this term on the web, so we can use it without confusion. For VMS, we add the results for "OpenVMS". We do not search for any derogatory slang misspellings of any operating system name. Subscribe to the srom-announce mailing list to receive announcements about changes to this site. Sucks-Rules-O-Meter technology is used in this report for The Defense Advanced Research Projects Agency (DARPA) (The views and conclusions contained in the document are those of the author and should not be interpreted as representing the official policies, either expressed or implied, of the Defense Advanced Research Projects Agency or the U.S. Government.)

9. Review Of Operating Systems Review of operating systems. Here are some research laboratories interested in operating systems (send me more addresses) Xerox http://tunes.org/Review/OSes.html

Review of Operating Systems FAQ Sitemap Search Collaboration ... Mirrors This page has been superceded by the project Wiki OS Review area Original Free OS Projects (formerly known as SPINE) is a distributed, reflective, component-based, adaptable operating system being built by researchers at the Systems Software Research Group from the University of Illinois at Urbana-Champaign and the Systems and Communications Group from the Universidad Carlos III - Madrid. Aegis (developed at MIT's Parallel and Distributed OSes group) is an OS based upon the idea of an "ExoKernel" (much like the NoKernel idea behind Tunes: there is no more runtime kernel in the OS, which yields up to 10000% performance gain). Also see D. Engler's page , and the various Exokernel and networking papers Olin Shivers' Express project at MIT developed ML/OS, an OS in ML, by combining SML/NJ with the Flux OS Kit , reusing the web server from the Fox project. The Flux project at university of Utah has been developing an OS toolkit (mirrored in Australia ), now release 0.97, so anyone can make their own OS from bricks. It is also developing its own Fluke microkernel on top.

10. Convergence International: The Non-Wintel User Group The nonWintel user group, supporting Acorn, Amiga, Apple, ARM, Be, NCs, PowerPC, Psion, Unix and other alternative operating systems. Services include a non-Wintel news summary. http://www.convergence.org/

Index Information News service Support Platform info ... Join CI (free) Welcome to Convergence International, the user group for non-Wintel platforms. Previous visitors might like to see what's new on the Convergence web site. Information Convergence's mission FAQs , details of the non-Wintel news service , information by e-mail, member statistics , and credits News service The Convergence International non-Wintel news service , a summary of non-Wintel news, including the latest news for Acorn Amiga Apple ARM ... Network Computer , and Psion/EPOC platforms. As well as regular member's opinions and an archive of Convergence International newsletters press releases , and other news CIhoo The non-Wintel search engine from Convergence International. Currently including a large database of Acorn and Psion links, with other platforms to be covered in detail in the future. Either search CIhoo or browse the Acorn or Psion sections in full. Platform information Detailed information on platforms supported by Convergence, currently covering Amiga CHRP , and Psion (more soon).

11. Review Of Operating Systems Review of operating systems. FAQ Sitemap Search Collaboration Seoul national university OS labs operating systems links. SIGOPS Create your own OS tutorial, describing the http://www.tunes.org/Review/OSes.html

Review of Operating Systems FAQ Sitemap Search Collaboration ... Mirrors This page has been superceded by the project Wiki OS Review area Original Free OS Projects (formerly known as SPINE) is a distributed, reflective, component-based, adaptable operating system being built by researchers at the Systems Software Research Group from the University of Illinois at Urbana-Champaign and the Systems and Communications Group from the Universidad Carlos III - Madrid. Aegis (developed at MIT's Parallel and Distributed OSes group) is an OS based upon the idea of an "ExoKernel" (much like the NoKernel idea behind Tunes: there is no more runtime kernel in the OS, which yields up to 10000% performance gain). Also see D. Engler's page , and the various Exokernel and networking papers Olin Shivers' Express project at MIT developed ML/OS, an OS in ML, by combining SML/NJ with the Flux OS Kit , reusing the web server from the Fox project. The Flux project at university of Utah has been developing an OS toolkit (mirrored in Australia ), now release 0.97, so anyone can make their own OS from bricks. It is also developing its own Fluke microkernel on top.

12. DBLP Bibliography: Operating Systems Links to many operating systems journals on the web. http://www.informatik.uni-trier.de/~ley/db/os.html

maintained by Michael Ley Welcome FAQ Search Author Title Advanced Search Operating Systems Conferences SOSP OSDI USENIX Conference ... Hypertext Acknowledgements : DBLP and The ACM SIGMOD Anthology were partially supported by - Forschungsfonds, ACM SIGMOD The VLDB Endowment The EDBT Endowment , and Microsoft Research . Numerous volunteers helped to collect and maintain the information provided by this server. DBLP: [ Home Author Title Conferences ... Journals Fri Jun 4 19:47:16 2004 by Michael Ley ley@uni-trier.de

13. Howstuffworks "How Operating Systems Work" The operating system controls every task a computer carries out. Main Computer Software How operating systems Work. by Curt Franklin, http://computer.howstuffworks.com/operating-system.htm

ComputerStuff AutoStuff ElectronicsStuff ScienceStuff ... PeopleStuff Top Subjects CD Burners Home Networking RAM Computer Viruses ... Web Servers Sponsored By: Categories Hardware Internet Peripherals Security ... Browse the Computer Library Explore Stuff Lidrock.com Big List of Articles Get the Newsletter Shop or Compare Prices ... Search HSW and the Web Search Google Main Computer Software How Operating Systems Work by Curt Franklin Table of Contents Introduction to How Operating Systems Work The Bare Bones Wake-Up Call Processor Management Memory and Storage Management Device Management Interface to the World The Future Lots More Information Shop or Compare Prices The operating system defines our computing experience. It's the first software we see when we turn on the computer, and the last software we see when the computer is turned off. It's the software that enables all the programs we use. The operating system organizes and controls the hardware on our desks and in our hands, yet most users can't say with any certainty precisely what it is that the operating system does. Box shot reprinted with permission from Microsoft Corporation Microsoft Corporation Microsoft XP operating system In this article, we'll tell you what a piece of software must do to be called an operating system, and show you how the operating system works to turn a collection of hardware into a powerful computing tool!

14. Distributed Systems s, bibliographies, and links to distributed operating systems, file systems, and computing environments....... http://www-vs.informatik.uni-ulm.de/DOSinWWW/DistribSys.html

Universität Ulm Abteilung Verteilte Systeme (VS) An Overview of Projects on Distributed Operating Systems Alfred J. Lupper Computer Science Department, Distributed Systems Laboratory University of Ulm D-89069 Ulm, Germany lupper@informatik.uni-ulm.de This collection of Distributed Systems gives an overview of past and current projects on distributed operating systems, including some remarkable distributed file systems and distributed programming environments. I believe this information is current and correct as of the given date, though it certainly is not complete. I apologize for any errors or omissions. If you find errors or you can give a helpful criticism, please let me know. This list will further be maintained at our department and updated continously. To add a missing entry please klick here © 1995, Alfred Lupper, Department of Computer Science, University of Ulm

15. Linux Online - About The Linux Operating System now literally hundreds of companies and organizations and an equal number of individuals that have released their own versions of operating systems based on http://www.linux.org/info/

What is Linux Linux is an operating system that was initially created as a hobby by a young student, Linus Torvalds, at the University of Helsinki in Finland. Linus had an interest in Minix, a small UNIX system, and decided to develop a system that exceeded the Minix standards. He began his work in 1991 when he released version 0.02 and worked steadily until 1994 when version 1.0 of the Linux Kernel was released. The kernel, at the heart of all Linux systems, is developed and released under the GNU General Public License and its source code is freely available to everyone. It is this kernel that forms the base around which a Linux operating system is developed. There are now literally hundreds of companies and organizations and an equal number of individuals that have released their own versions of operating systems based on the Linux kernel. More information on the kernel can be found at our sister site, LinuxHQ and at the official Linux Kernel Archives . The current full-featured version is 2.6 (released December 2003) and development continues. Apart from the fact that it's freely distributed, Linux's functionality, adaptability and robustness, has made it the main alternative for proprietary Unix and Microsoft operating systems. IBM, Hewlett-Packard and other giants of the computing world have embraced Linux and support its ongoing development. More than a decade after its initial release, Linux is being adopted worldwide as a server platform primarily. Its use as a home and office desktop operating system is also on the rise. The operating system can also be incorporated directly into microchips in a process called "embedding" and is increasingly being used this way in appliances and devices.

16. CodeBIG Offers help in planning, development and support for networks, operating systems, programming and development applications. http://www.codebig.com/

Sun Jun 06 16:29:05 GMT+07:00 2004 Software used to be "small" - applications would run on an isolated system and used solely by the employees of the company that installed them. Small applications no longer provide any competitive edge because every business has them. Only "big" applications designed from the ground up to communicate with partners, customers, and suppliers provide true competitive advantage. CodeBIG, Inc. is a consulting company founded to help our customers with the architecture, planning, and development of these types of communications-aware applications using a combination of years of network programming experience and innovative technologies. We can help your company with: C/C++ Programming Network Architecture Test Planning Object Oriented Analysis and Design Technical Documentation Web and Desktop Testing Performance Analysis Network Programming TCP/IP SOAP Web Services XML UNIX Solaris Linux FreeBSD Click here To find out more and to see the resumes for some of our consultants 10 Common TCP/IP Programming Mistakes Simulating Latency and Bandwidth in the Lab Microsoft WSPG Performance Alert Latency and SOAP Applications ... CORBA Vs. SOAP

17. Sente Limited - Custom Software Development And Bespoke Application Design - Oxf A software development company specializing in custom application design and development using Delphi and C++ under Windows operating systems. http://www.sente.co.uk/

Sente Limited A software development company specializing in custom application design and development using Delphi under Windows operating systems. Based near Oxford in the UK. © Sente Limited 2004 Products include: Labelling software for the IT industry, screensavers, exhibition software, educational CBT software, industrial curtain cutting algorithms, and many other applications.

18. Solaris Operating System (SPARC & X86) and x86 platforms. Provides superior safeguards against internal and external threats far beyond the protection commonly found in standard operating systems. http://www.sun.com/solaris/

sun.com How To Buy My Sun Worldwide Sites ... Operating Systems Solaris Operating System Product Home Family Comparison General FAQ System Requirements Get the Software The Solaris Operating System redefines what an operating system should be. It is the premier OS for reducing cost and complexity throughout the boundaryless data center. Building on 20 years of experience, Sun provides customers with a secure and highly available environment by design. The Solaris OS can scale up and scale out, allowing customers to take full advantage of UltraSPARC or x86 processor-based systems, from smaller departmental servers to massive SunPlex clusters with hundreds of CPUs. NEW Solaris 10 OS At a Glance Product Purpose Solaris Operating System for SPARC Platforms Designed for multiprocessing and 64-bit computing using UltraSPARC processor-based systems - from small departmental servers to massive SunPlex clusters with hundreds of CPUs. Solaris Operating System for x86 Platforms Delivers superior scalability across platforms, providing plenty of room for your growing enterprise along with the performance you need to handle the most complex tasks in record times. Trusted Solaris Operating System for both SPARC and x86 platforms Provides superior safeguards against internal and external threats far beyond the protection commonly found in standard operating systems.

19. Homepage SAE - STAHL - Operator Panels For Hazardous And Industrial Areas Produces operating systems for variety of special purpose requirements. Includes panels for use in hazardous areas and on board ships. http://www.exicom.de

Operator Panel, Operator Terminal, HMI, MMI and much more for the for hazardous areas zone 1 and 2 Operator Interfaces and Units for all PLC's Connection for Profibus, Siemens, Allen Bradley and other PLC Systems Diffrent Exi terminals with Touch and TFT graphic display Fieldbus, Modbus and MPI Operator Panel for hazardous and non-hazardous environment. OP, HMI and MMI , IPC for all PLC and DCS System also for EX environment. Connect your SCADA sytsem thru MPI or Profibus

20. Operating Systems, Fourth Edition Technical Resources and Course Web Site for. operating systems, Fourth Edition. by William Stallings ACM Special Interest Group on operating systems. Information on SIGOPS publications and IEEE Technical Committee on operating systems and Applications. Includes an online newsletter http://www.williamstallings.com/OS4e.html

Technical Resources and Course Web Site for Operating Systems, Fourth Edition by William Stallings Two-time winner of the best Computer Science and Engineering textbook of the year from the Textbook and Academic Authors Association: (fourth edition, 2002; third edition, 1998) Last Updated: Thursday, May 6, 2004 This site is intended to provide support for instructors and students using the book. For more information about the book, see the Prentice Hall page , which provides a table of contents and description. Useful Web Sites UNIX Guru Universe : Excellent source of UNIX information. Linux Documentation Project : The name describes the site. Windows Development : Good source of information on Windows internals. Note especially the section on Windows Base Services The comp.os.research FAQ : Lengthy and worthwhile FAQ covering operating system design issues. ACM Special Interest Group on Operating Systems. Information on SIGOPS publications and conferences. IEEE Technical Committee on Operating Systems and Applications. Includes an online newsletter and links to other sites. IEEE Computer Society Task Force on Cluster Computing An international forum to promote cluster computing research and education.

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