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Topic: Operating system

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  Server Operating Systems Technical Comparison
For non-technical persons: A general overview of operating systems for non-technical people is located at: kinds of operating systems.
Brief summaries of operating systems are located at: summaries of operating systems.
The holistic area looks at operating systems from a holistic point of view and particular subjects in that presentation may be useful for comparison.
www.osdata.com   (0 words)

  Howstuffworks "How Operating Systems Work"
The operating system must make sure that the requirements of the various users are balanced, and that each of the programs they are using has sufficient and separate resources so that a problem with one user doesn't affect the entire community of users.
Managing all the resources of the computer system is a large part of the operating system's function and, in the case of real-time operating systems, may be virtually all the functionality required.
For other operating systems, though, providing a relatively simple, consistent way for applications and humans to use the power of the hardware is a crucial part of their reason for existing.
kmh.ync.ac.kr /OS/how/operating-system.htm   (4254 words)

  Operating system - Wikipedia, the free encyclopedia
As well as the kernel, an operating system is often distributed with system software that manages a graphical user interface (although Windows and Macintosh have integrated these programs into the operating system), as well as utility programs for tasks such as managing files and configuring the operating system.
Commercially-supplied operating systems are present on virtually all modern devices described as computers, from personal computers to mainframes, as well as mobile computers such as PDAs and mobile phones.
Mainframe operating systems, such as IBM's z/OS, and embedded operating systems such as VxWorks, eCos, and Palm OS, are usually unrelated to Unix and Windows, except for Windows CE, Windows NT Embedded 4.0 and Windows XP Embedded which are descendants of Windows, and several *BSDs, and Linux distributions tailored for embedded systems.
en.wikipedia.org /wiki/Operating_system   (3503 words)

 Operating System Functions
The operating system makes these interfacing functions along with its other functions operate smoothly and these functions are mostly transparent to the user.
System crashes and instabilities - These can happen due to a software bug typically in the operating system, although computer programs being run on the operating system can make the system more unstable or may even crash the system by themselves.
A system crash is the act of a system freezing and becoming unresponsive which would cause the user to need to reboot.
www.comptechdoc.org /basic/basictut/osintro.html   (906 words)

 List of operating systems - Wikipedia, the free encyclopedia
System V (a release of ATandT Unix, 'SVR4' was the 4th minor release)
This should not be confused with the Sinclair QDOS operating system of the same name for the Sinclair QL computer.
NNIX - an operating system for running programs in MMIX assembly language, which are both used as (fictional) illustrations in The Art of Computer Programming.
en.wikipedia.org /wiki/List_of_operating_systems   (1957 words)

 Operating Systems Notes
The core of the operating system is the kernel, a control program that functions in privileged state (an execution context that allows all hardware instructions to be executed), reacting to interrupts from external devices and to service requests and traps from processes.
Operating systems generally accomplish these goals by running processes in low privilege and providing service calls that invoke the operating system kernel in high-privilege state.
An operating system transforms the physical world of devices, instructions, memory, and time into virtual world that is the result of abstractions built by the operating system.
www.personal.kent.edu /~rmuhamma/OpSystems/Myos/osIntro.htm   (582 words)

 What is operating system? - A Word Definition From the Webopedia Computer Dictionary   (Site not responding. Last check: )
Operating systems perform basic tasks, such as recognizing input from the keyboard, sending output to the display screen, keeping track of files and directories on the disk, and controlling peripheral devices such as disk drives and printers.
The operating system is also responsible for security, ensuring that unauthorized users do not access the system.
The commands are accepted and executed by a part of the operating system called the command processor or command line interpreter.
www.webopedia.com /TERM/o/operating_system.html   (656 words)

 operating system definition - isp.webopedia.com - The Glossary for Internet Service Providers   (Site not responding. Last check: )
Operating systems perform basic tasks, such as recognizing input from the keyboard, sending output to the display screen, keeping track of files and directories on the disk, and controlling peripheral devices such as disk drives and printers.
The operating system is also responsible for security, ensuring that unauthorized users do not access the system.
The commands are accepted and executed by a part of the operating system called the command processor or command line interpreter.
isp.webopedia.com /TERM/S/operating_system.html   (521 words)

 Operating system - Uncyclopedia   (Site not responding. Last check: )
An operating system is the use of a set (or "system") of natural processes in order to make telephone switchboard connections.
After the demise of Bell Labs' operating system research group, in 1988 SCO picked up the pieces and learned from Bell's mistakes.
With the utter abandonment of operating systems, a great number of trained animals were suddenly put out of work.
uncyclopedia.org /wiki/Operating_system   (990 words)

Such an operating system would raise the level of abstraction for developers and users, so that individual computers, file systems, and networks become unimportant to most computations in the same way that processor registers, disk sectors, and physical pages are today.
The system should be able to reason about its computations and resources, allocating, replicating, and moving computations and data to optimize its own performance, resource usage, and fault-tolerance.
This would allow the operating system to protect computations from each other, transparently migrate and distribute them, and intercede in their access to resources.
research.microsoft.com /research/sn/Millennium/mgoals.html   (2875 words)

 Linux Online - About the Linux Operating System
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.
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.
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.
www.linux.org /info/index.html   (752 words)

 The COSA Operating System
It is the part of the COSA operating system that handles the reactive logic for the entire system.
An ideal COSA operating system would have no algorithmic processes whatsoever as all objects would be self-processing and would communicate via direct connection pathways, not unlike biological neurons.
Since the system is driven by change, only the cells that are directly affected by events need to be processed during any given cycle.
www.rebelscience.org /Cosas/System.htm   (6568 words)

 Popular operating systems list, by The Linux Information Project (LINFO)
The core component, the Hurd (Hird of Unix-replacing daemons) kernel (i.e., the core of the operating system), is still not completed because of its very ambitious goal: to surpass Unix-like kernels in functionality, security and stability while remaining largely compatible with them.
It is unusual among Unix-like operating systems in that it is built on the Mach kernel, which is also used in Mac OS X. Tru64 was originally developed by Digital Equipment Corporation (DEC) and called Digital UNIX.
POSIX (Portable Operating System Interface for uniX) is a set of programming interface standards governing how to write source code so that the applications are portable between operating systems.
www.bellevuelinux.org /operating_systems_list.html   (1439 words)

 Solaris Operating System (Unix)
Solaris is the UNIX-based operating system of Sun Microsystems with roots in the BSD operating system family.
The operating system Solaris 2.0 (SunOS 5.0) basing on the UNIX system V release 4 was published in July 1992.
The operating system was changed to 64-bit and supports NFS 4.0 now, the IP-Stack was improved and improved with a new threading procedure.
www.operating-system.org /betriebssystem/_english/bs-solaris.htm   (1537 words)

 Review of Operating Systems   (Site not responding. Last check: )
As embedded systems (PDAs, cellphones, point-of-sale devices, VCRs, industrial robot control, or even your toaster) become more complex hardware-wise with every generation, and more features are put into them by the day, applications they run require more and more to run on actual operating system code in order to keep the development time reasonable.
Microsoft's attempts at fitting a large unstable desktop-PC operating system, with a hammer, into the stringent requirements of embedded systems are here: Windows CE (which is about to lose its 'CE' part so as to confuse people a bit more) and their latest monster,
Aditya Bansod's OSS and OSS2 are operating system simulators for Windows that implement their own OS ontop, and provide abstraction for local processes.
tunes.org /Review/OSes.html   (3214 words)

 Operating Systems: A Look into the Past of 0s and 1s   (Site not responding. Last check: )
At a lower level, the operating system controls the entire set of components on a computer, such as the CD-ROM, the hard drive, the video card and the CPU (central processing unit).
The first operating systems were very simple and could only handle simple calculations; however, this was also a limitation of the hardware.
The earliest operating systems worth noting are FORTRAN Monitor System, SABRE, and University of Manchester’s Atlas I Supervisor.
www.sinc.sunysb.edu /Stu/jnross/cse301/operatingsystems.htm   (984 words)

 K42/Tornado Operating System
K42 is a research operating system currently being developed to address performance and scalability issues of system software on large-scale, shared-memory, NUMA multiprocessor computers.
The operating system is a product of research at the University of Toronto in collaboration with the K42 group at the IBM Thomas J.
The K42/Tornado Operating System is closely tied with the K42 project at the IBM Thomas J. Watson Research Center.
www.eecg.toronto.edu /~tornado   (632 words)

 Amazon.com: Operating System Concepts: Books: Abraham Silberschatz,Peter Baer Galvin,Greg Gagne   (Site not responding. Last check: )
Small footprint operating systems, such as those driving the handheld devices that the baby dinosaurs are using on the cover, are just one of the cutting-edge applications you'll find in Silberschatz, Galvin, and Gagne's Operating System Concepts, Seventh Edition.
As a beginner in understanding how operating systems are created the first few chapters were easy to read and understand, but after that I needed the professor to be able to understand the concepts.
While "Operating Systems" is not exactly the sexiest subject in Computer Science, it ought to be possible to make it interesting, for example by taking a historical or problem solving approach.
www.amazon.com /Operating-System-Concepts-Abraham-Silberschatz/dp/0471694665   (2087 words)

 Operating system flexibility
To install multiple operating systems on a single computer, the details of hard drive organization must be understood.
Different operating systems have different limitations on how and where they can be installed on the hard drive.
The ability to select from two or more operating systems at boot time will save the cost of a second machine to run the alternate OS or the time required to delete and install a new OS.
www.ibm.com /developerworks/library/l-flex.html?dwzone=linux   (2012 words)

 Microsoft Research Operating Systems Group
The Operating Systems Group is a unit of the Systems and Networking Reearch Area.
The most important job of an operating system is to provide a context within which programs can be created and run.
Singularity is a research project focused on the construction of dependable systems through innovation in the areas of systems, languages, and tools.
research.microsoft.com /os   (283 words)

 Operating System (a definition)   (Site not responding. Last check: )
An operating system (sometimes abbreviated as "OS") is the program that, after being initially loaded into the computer by a bootstrap program, manages all the other programs in a computer.
In multitasking operating systems where multiple programs can be running at the same time, the operating system determines which applications should run in what order and how much time should be allowed for each application before giving another application a turn.
It sends messages to the applications or interactive user (or to a system operator) about the status of operation and any errors that may have occurred.
share.geocities.com /CapeCanaveral/Launchpad/1844/operatin.html   (264 words)

 GooOS, the Google Operating System (kottke.org)
He argues that Google is building a huge computer with a custom operating system that everyone on earth can have an account on.
I was thrilled reading this today because I had been thinking along the same lines as I wondered about Gmail (and the 1GB of storage in particular)...and that Skrenta had made the argument so well.
This weekend, as I hacked through a bunch of XHTML and CSS for an upcoming site redesign, I jotted down a few notes for a follow-up on a post I made over a year ago called Google is not a search company.
www.kottke.org /04/04/google-operating-system   (0 words)

 Operating System   (Site not responding. Last check: )
The operating system of current hand held computers is not located on a hard drive like on a typical PC, but is instead found in a read-only memory chip or card.
Operations that can be performed here are creating shortcuts or folders, transfering files, creating appointments, downloading messages, installing new programs, and backing up your data just to name a few.
The Windows CE operating system is preinstalled in ROM on Handheld PCs (H/PCs) available from CASIO Computer Co., Ltd.
www.ee.washington.edu /conselec/au98/osw/project/OSwindowsce.html   (1927 words)

 [No title]
OPERATING SYSTEM NAMES (last updated 2002-04-29) These are the Official System Names as they appear in the Domain Name System HINFO records and the NIC Host Table.
A system name may be up to 40 characters taken from the set of uppercase letters, digits, and the three punctuation characters hyphen, period, and slash.
It must start with a letter, and end with a letter or digit.
www.iana.org /assignments/operating-system-names   (75 words)

 Debian -- The Universal Operating System
Debian is a free operating system (OS) for your computer.
An operating system is the set of basic programs and utilities that make your computer run.
Debian uses the Linux kernel (the core of an operating system), but most of the basic OS tools come from the GNU project; hence the name GNU/Linux.
www.debian.org   (0 words)

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