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Encyclopedia results for Fault tolerant computer systems

Fault tolerant computer systems





Encyclopedia results for Fault tolerant computer systems

  1. Fault-tolerant computer system

    Image Distribfaultredudance.PNG thumb widthpx A conceptual design of a segregated component fault tolerant computer design Fault tolerant computer systems are systems designed around the concepts of fault ... of faults. Types of fault tolerance Most fault tolerant computer systems are designed to be able ... were among the first companies specializing in the design of fault tolerant computer systems for Online ... Fault tolerant computer systems&hl en&ct clnk&cd 13&gl us&client firefox a Primer on Fault Tolerant Computer Systems from UCLA http www.freepatentsonline.com 5099485.html A fault tolerant patent with a lot of basic information on specific ways to detect faults Category Fault tolerance Computer systems Category Computer architecture Category Classes of computers Category Fault tolerant ... Fault tolerant computer system design book contents. Dhiraj K. Pradhan, Pages 135 138 1996 ISBN 0 13 057887 8 ref Hardware fault tolerance is the most common application of these systems, designed to prevent ... on the application and the available hardware. ref Fault tolerant computer system design book ... before failure. ref Fault tolerant computing in computer design Neilforoshan, M.R Journal of Computing ... The most important requirement of design in a Fault tolerant design fault tolerant computer system .... ref Reliability Evaluation of Some Fault Tolerant Computer Architectures By Shunji Osaki, Toshihiko Nishio Published by Springer, 1980 ISBN 3 540 10274 4, 978 3 540 10274 8 ref See also Fault tolerant ... connectors, power supplies, fans, etc. ref Formal Techniques in Real Time and Fault Tolerant ... tolerant computer was SAPO computer SAPO , built in 1951 in Czechoslovakia by Antonin Svoboda . ref ... ISBN 0 07 057302 6, 978 0 07 057302 4 ref In general, the early efforts at fault tolerant designs were ..., and it is still the most common form of level one fault tolerant design in use today. Voting was another ... of systems and the difficulty of ensuring the transitive state from fault negative ...   more details



  1. Fault-tolerant design

    tolerance Category Reliability engineering Category Fault tolerant computer systems fr Tol rance ... tolerant , and represents the vast majority of fault tolerant systems. In such systems the mean time ... computer science . Disadvantages Fault tolerant design s advantages are obvious, while many of its ... of the fault tolerant systems. This is usually handled with a separate automated fault detection .... For certain critical fault tolerant systems, such as a nuclear reactor , there is no easy way to verify ...dablink This article is about general fault tolerant design theory. For specific implementations, see fault tolerant system . Refimprove date January 2008 In engineering , fault tolerant design is a design ... is most commonly used to describe computer based systems designed to continue more or less fully operational ... . When to use Providing fault tolerant design for every component is normally not an option. In such cases the following criteria may be used to determine which components should be fault tolerant ... fault tolerant? Requiring a redundant car engine, for example, would likely be too expensive ... margin. Examples main Fault tolerant system Hardware fault tolerance sometimes requires that broken ..., but this is not specifically required in a fault tolerant system. Fault tolerance is notably ... tolerance in B can hide a problem with A. If component B is later changed to a less fault tolerant ... of the fault, having a fault tolerant system is likely to reduce the importance of repairing the fault. If the faults are not corrected, this will eventually lead to system failure, when the fault tolerant .... Both fault tolerant components and redundant components tend to increase cost. This can be a purely ..., have so many redundant and fault tolerant components that their weight is increased dramatically over unmanned systems, which don t require the same level of safety. Inferior components. A fault ... than, a comparable non fault tolerant system. Related terms There is a difference between fault ...   more details



  1. Fault Tolerant Ethernet

    Fault Tolerant Ethernet FTE is designed to provide rapid network redundancy. Each Node networking node is connected twice to a single LAN through the dual network interfaces. The driver and the FTE enabled components allow network communication to occur over an alternate route when the primary route fails. ref http hpsweb.honeywell.com Cultures en US Products Systems ExperionPKS FaultTolerantEthernet default.htm ref FTE was created by Honeywell . References references External links http hpsweb.honeywell.com Cultures en US Products Systems ExperionPKS FaultTolerantEthernet default.htm Honeywell Fault Tolerant Ethernet Page Category Computer networking ...   more details



  1. Fault-tolerant system

    This article contains specific implementations of fault tolerant systems. For general theory, see fault tolerant design . Fault tolerance or graceful degradation is the property that enables a system often ... them without causing the document to be unusable. Recovery from errors in fault tolerant systems ... propagation of the failure Availability of reversion modes In addition, fault tolerant systems ... five nines system would statistically provide 99.999 availability. Fault tolerant systems ..., uber category, or just the same thing? Merge? fall back and forward Fault tolerant design Fault tolerant computer systems Progressive Enhancement Separation of protection and security Rollback ... issn 0360 0300 cite journal author P. J. Denning title Fault tolerant operating systems ..., Strategies and Challenges in Building Fault Tolerant CORBA Systems by Pascal Felber and Priya Narasimhan ... the first fundamental characteristic of fault tolerance in three ways Replication computer science ... redundant array of independent disks , except RAID 0, are examples of a fault tolerant data storage device storage device that uses data redundancy . A lockstep computing lockstep fault tolerant machine ... number of replications. Lockstep computing Lockstep fault tolerant machines are most easily made ... 677518.html Practical Considerations in Making CORBA Services Fault Tolerant by Priya ... www.hpc4u.org HPC4U addressing development of fault tolerant technologies for Grid computing environments http www.sohar.com services fault tolerance Fault Tolerance and High Availability Systems http ... Degradation in the RKBExplorer http www.resilience.com Fault Tolerance and High Availability Systems ... tolerance Category Computer systems Category Software Category Control engineering Category Systems engineering Category Software quality Category RAID Category Fault tolerant computer systems ar cs Fault tolerant system de Fehlertoleranz ko it Tolleranza ai guasti nl Fouttolerant ...   more details



  1. Fault-tolerant software

    risk mitigation strategies. See also Fault tolerant design Fault tolerant system Fault tolerant computer system References Reflist Category Software architecture Category Fault tolerance ...Fault tolerant software has the ability to satisfy requirements despite failures. ref Cite web url http www.ece.cmu.edu koopman des s99 sw fault tolerance title Software Fault Tolerance publisher Carnegie Mellon University ref ref Cite web url http people.csail.mit.edu strumpen micro98.pdf title Portable and Fault Tolerant Software Systems publisher Massachusetts Institute of Technology ref Definition The fundamental requirement is to prevent the following from interfering with operation. Operating system failures Hardware failure Operating system failure Computer applications make a call using the application programming interface API to access shared resources, like the keyboard, mouse, screen, disk drive, network, and printer. These can fail in two ways. Blocked Calls Faults Blocked calls A blocked call is a request for services from the operating system that halts the computer program until results are available. As an example, the TCP call blocks until a response becomes available from a remote server. This occurs every time you perform an action with a web browser. Intensive calculations cause lengthy delays with the same effect as a blocked API call. There are two methods used ... state Semaphore programming Semaphore Blocking computing Blocking Faults Fault are induced by Signal computing signals in POSIX compliant systems, and these signals originate from API calls, from the operating ... a fault that causes premature application termination. The handler is a function that is performed on demand ... fault tolerance for software requires the following. Backup Redundancy engineering Redundancy Backup ... computer computing device so that the recovery delay is brief. This can be achieved using continuous ... by replicating information as it is created on multiple identical systems, which can eliminate ...   more details



  1. Configurable Fault Tolerant Processor

    The Configurable Fault Tolerant Processor CFTP , developed by the Space Systems Academic Group at the Naval Postgraduate School , is an experimental payload on board the United States Naval Academy s USNA MidSTAR I USNA MidSTAR 1 satellite. Midstar 1 was launched into a 492km low earth orbit LEO on March 8, 2007, aboard an Atlas V expendable launch vehicle from Cape Canaveral Air Force Station , along with FalconSat 3 , STPSat 1 , and CFESat as secondary payloads. The primary payload was Orbital Express . CFTP Purpose The Configurable Fault Tolerant Processor Project aims to demonstrate the feasibility of using Field Programmable Gate Array s FPGAs for spacecraft computer processing by applying various fault tolerance techniques to the designs. CFTP provides a valuable testbed for on orbit evaluation of various fault tolerant concepts. The use of FPGAs provides added flexibility, allowing on orbit upgrades and rapid development cycles. Using Commercial off the shelf COTS technology allows the engineer to produce more technologically advanced designs at a lower cost and in a shorter time than using more traditional space grade components. Space based FPGA design also provides the Naval Postgraduate School students with unique challenges in developing for and configuring the system. Remotely accessing the platform over a limited downlink and uplink provides challenges not seen on ground based systems. ref cite web title Challenges of Remote FPGA Configuration for Space Applications publisher Naval Postgraduate School date 2005 03 05 url http ieeexplore.ieee.org iel5 10432 33126 01559549.pdf?tp &arnumber 1559549&isnumber 33126 ref CFTP Versions CFTP 1 The CFTP 1 board utilizes Xilinx Virtex FPGA Virtex I parts for both the control and experiment FPGAs. The complete CFTP payload, as delivered to MidSTAR 1, consists of the CFTP board itself shown in the spacecraft image above ... and Data Handler C&DH computer through a serial PPP link. CFTP 1 underwent radiation testing at the UC ...   more details



  1. Fault-tolerant messaging

    Fault Tolerant Messaging or Failover Abstraction is the ability to transparently failover a call or request from one service transport protocol to another upon failure with no changes to the functional code or business logic implementation. In elemenope , this ability to failover is achieved via Dispatcher Failover DFo configuration. The elemenope framework has the ability to configure multiple nested failover chains. A typical use of the DFo functionality is the failover from a synchronous service transport protocol to an asynchronous service transport protocol. For instance, when an XML RPC service is down, the messages may be failed over to an asynchronous JMS queue implementation for processing when the service is available. Source elemenope User Guide See also elemenope External links As of 29 May 2007, this article is derived in whole or in part from http elemenope.org doc userguide LICENSE The Elemenope User Guide . The copyright holder has licensed the content utilized under Wikipedia Text of the GNU Free Documentation License GFDL . All relevant terms must be followed. http elemenope.org elemenope home page http elemenope.org doc userguide userguide 1.1.pdf elemenope User Guide Category Software architecture ...   more details



  1. AT&T Computer Systems

    AT&T Computer Systems is the generic name for American Telephone & Telegraph s unsuccessful attempt to compete in the computer business. In return for divesting the local Bell Operating Companies Regional Bell operating company Baby Bells , AT&T was allowed to have an unregulated division to sell computer ... bought OEM equipment from Genicom, was phased out. By the mid 1990s, this left only AT&T Computer Systems. AT&T Computer Systems abbreviated AT&T CS was the home of the UNIX System V operating system ... server computer systems. See also Unix wars . Throughout the 1980s and early 1990s, AT&T CS produced many firsts in the computer world, besides the UNIX operating system itself. The 3B5 1981 1978 ... left the company and went to Sequent Computer Systems . The 3B5, 3B15, and 3B20S and 3B20D were aimed ... of Directors decided to close down AT&T Computer Systems, and buy the NCR Corporation , announced in 1991 ... in designing computer systems. 3 AT&T CS employees went into the new NCR, 25 stayed with AT&T, and the rest about 200 went to Lucent. Many former AT&T Computer Systems employees have been employed .... 62, No. 1, Part 1 References reflist DEFAULTSORT At&t Computer Systems Category Telecommunications ... 1, 1984, American Telephone & Telegraph was required to put its computer business into a fully separated subsidiary called AT&T Information Systems ATTIS, without the ampersand or hyphen . Software ... corporate organization, and it was renamed AT&T Data Systems Group, consisting of 3 divisions Computer, Terminals the Teletype Corporation of Skokie, IL , and Printers. In 1991, the AT&T Data Systems Group, with the three divisions was announced to the public. In 1992 the Terminals ..., and the 3B15 was the first computer to run a demand paging demand paging version of Unix. There was a project ... 200 Desktop computer desktop unit, to a 3B2 1000, data center sized , these machines were sold with System ... single computer contract the Federal government had awarded at that time. It was also the first supermicrocomputer ...   more details



  1. Computer systems analyst

    A computer systems analyst is an occupation in the field of information technology . A computer systems analyst works to solve problems related to computer technology . Many analysts setup new computer systems, both the hardware and software , add new software applications to increase computer productivity. Others act as system developers or system architects, but most analysts specialize in a specific type of system such as business systems , accounting systems , financial system financial systems , or scientific systems. As of 2011, the sectors employing the greatest numbers of computer systems analysts were state government, insurance, computer system design, professional and commercial equipment, and company and enterprise management. The number of jobs in this field is projected to grow from 487,000 as of 2009 to 650,000 by 2016. ref cite web url http www.collegedegreereport.com articles computer systems analyst careers employment salary trends aspiring computer systems analyst title Computer Systems Analyst Careers Employment & Salary Trends for Aspiring Computer Systems Analysts ref This job ranked third best in a 2009 survey. ref http online.wsj.com public resources documents st BESTJOBS2010 20100105.html Best and Worst Jobs 2010 ref References reflist External links http www.bls.gov oco ocos287.htm Occupational Outlook Handbook Computer Systems Analysts , U.S. Department of Labor Bureau of Labor Statistics, no copyright work of US federal government http www.onetonline.org link summary 15 1051.00 15 1051.00 Computer Systems Analysts , O NET Online Category Computer occupations ...   more details



  1. List of Soviet computer systems

    This is the list of Soviet computer systems . The Russian language Russian abbreviation EVM , present ... computer Sneg http www.computer museum.ru histussr vesna.htm early mainframes Operating systems ... Computing List of Soviet computer systems Category Classes of computers Soviet deleted. Article goes where ever Computing in the Soviet Uniin goes DEFAULTSORT Soviet computer systems Category Computing lists Category Computing in the Soviet Union Computer systems Category Soviet brands Computer ... electronic computing machine. See also History of computer hardware in Soviet Bloc countries Hardware ... 5 92 5E92b 5 92 and many over ... A series computer A series ES EVM compatible military computers Agat computer Agat Apple II clone Aragats computer Aragats Argon computer Argon a series of military real time computers ATM computer ATM Turbo improved List of ZX Spectrum clones ZX Spectrum clone BESM series of Mainframe computer mainframe s Besta computer Besta Unix box, Motorola 68020 based, Sun 3 clone ru 3 28 Elektronika D3 28 Dnepr computer Dnepr Dubna 48K improved List of ZX Spectrum clones ZX Spectrum clone Elbrus computer Elbrus high ... 0010, 0011 PDP 11 The LSI 11 LSI 11 clone home computer UKNC educational, PDP11 like Elektronika 60 , Elektronika 100 Elektronika 85 Clone of DEC Professional computer 350 F11 Elektronika 85.1 Clone of DEC Professional computer 380 J11 Elektronika SS BIS Cray clone ES ... Hybrid Computer System Hobbit computer Hobbit improved List of ZX Spectrum clones ZX Spectrum clone Iskra computer Iskra common name for many computers with different architecture Iskra 1030 Intel 8086 XT clone Irisha Kiev computer Kiev KVM 1 1 Korvet Krista Kronos computer Kronos M 1 computer M 1 one of the earliest stored program computers 1950 1951 M series computer M series series of mainframes and mini computers MESM Micro 80 ...   more details



  1. Elitegroup Computer Systems

    Infobox Company name ECS br Elitegroup Computer Systems Co., Ltd br logo Image Elitegroup Computer Systems Logo.svg 160px type Public company Public TSE 2331 genre foundation 1987 founder location city Neihu District , Taipei City location country Taiwan key people Wenyan Lin Guo, CEO and Chairman Shunyi Ni, Managing Director industry Computer hardware br Electronics products Motherboard s br Graphics Card services market cap revenue operating income net income assets equity owner num employees 15,493 parent divisions subsid homepage http www.ecs.com.tw www.ECS.com.tw footnotes intl yes Elitegroup Computer Systems Co., Ltd TSE 2331 , ECS zh c p j ngy ng di nn o g f n y uxi n g ngs is a Taiwan based electronics firm. It is the fifth largest PC motherboard manufacturer in the world after Asus , Gigabyte Technology , ASRock , and Micro Star International MSI , with production reaching 24 million units in 2002. Many of these motherboards have been produced for Original Equipment Manufacturer OEM customers and are used in systems assembled and sold by such brand name companies as IBM and Compaq . Its main competitors are Micro Star International and ASRock . File Elitegroup Computer Systems headquarters building.jpg thumb ECS headquarters building in Neihu District, Taipei City. The company has since concentrated on broadening its product range. After ECS s purchase ... USA, Elitegroup Computer Systems Merger, Creating a New Era in the PC Industry Fremont CA June 1 ... Computer Systems Elitegroup Computer Systems ECS also produces Acer Inc. Acer computers. Asus Pegatron ... Category Companies based in Taipei tech company stub Taiwan company stub de Elitegroup Computer Systems it Elitegroup Computer Systems nl Elitegroup Computer Systems ja pl Elitegroup Computer Systems pt Elitegroup Computer Systems uk Elitegroup ... and manufacture of laptops , desktop replacement computer s and multimedia products. ECS computers ...   more details



  1. Altos Computer Systems

    Altos Computer Systems was founded in 1977 by David G. Jackson. ref name EofM cite book last Sanchez first Mike contribution Altos Computer Systems year 1988 title Encyclopedia of Microcomputers Editor Last Kent editor first Allen coeditor Williams, James G. volume 1 pages 66 73 publisher Marcel Dekker, Inc. location New York, NY pages 66 73 contribution url http books.google.com books?id F Y0wdIIucgC&pg PA66&lpg PA66&dq altos computer systems&source bl&ots lPaMZoZPy&sig jHQq esZL5gqcMIGxFOynoBGoAw&hl en&ei B5XtTOWvKYrMnAfY0fmAAg&sa X&oi book result&ct result&resnum 4&ved 0CDwQ6AEwAzgK v onepage&q altos 20computer 20systems&f false isbn 0 8247 2700 2 ref It was acquired by Acer Inc. Acer in 1990. Citation needed date November 2010 References reflist External links http www.tenox.tc docs Altos Xenix QuickRef.pdf Altos Xenix Quick Reference Card Category Computer companies of the United States Category Defunct computer companies of the United States US company stub ca Altos Computer Systems ...   more details



  1. Ferranti Computer Systems

    Infobox company company logo Image Ferranti logo.svg 200 px Ferranti Computer Systems logo homepage http www.ferranti.be www.ferranti.be Ferranti Computer Systems , headquartered in Antwerp Belgium , was founded as a subsidiary of Ferranti Ferranti International plc in 1976 and has been a member of the Nijkerk Group since 1994. It owes its name to its original founder Sebastian Ziani de Ferranti , an electrical engineer, born in Liverpool in 1864, who, at the age of 13, invented the arc light for street lighting and, when 16, built and patented an electrical generator the Ferranti dynamo . Ferranti Computer Systems develops MECOMS , an integrated meter to cash and meter data management solution which is built on top of Microsoft Dynamics AX Microsoft s ERP suite . ref http www.mecoms.com MECOMS ref In Benelux, Ferranti sells the product and acts as a system integrator. Outside the Benelux region, Ferranti Computer Systems delivers its product through a channel organization of partners and offers professional services from Belgium, Germany, and India. Major system integrator partners for Europe are Logica and Euriware . Other reselling, consulting, and implementation partners are PwC , Hindustan Computers HCL , Wipro , Bluestar Disambiguation needed date January 2012 , and Praxis Disambiguation needed date January 2012 . Additionally, for international development, Ferranti Computer Systems is making use of its Microsoft relationship and partner channel, leveraging Microsoft s clear interest in the energy and utility sector, and extending support capabilities in different regions. External links http www.ferranti.be Official Ferranti Computer Systems Website References reflist Category ERP software companies Category Companies of Belgium ...   more details



  1. HAL Computer Systems

    HAL Computer Systems, Inc was a Campbell, California based computer manufacturer founded in 1990 by Andrew ... . In mid 1996, Fujitsu had HAL Computer Systems spin off HAL Software Systems as Chisholm Technologies ... hal software systems Fujitsu To Spin Off HAL Software Systems . Computer Business Review . Computergram ... Computer Systems ... with HAL s progress and their failure to introduce systems with their 64 bit processor, but the company had no comment on the suggestions. ref Heller Quits HAL Computer To Steer Fujitsu Companies ... their product plans during their operation as an independent company. Initial systems were intended ... out of order execution with Mainframe computer mainframe style reliability, availability and serviceability ... later develop a microprocessor with the same name. HAL Software Systems HAL Software Systems was HAL ... Own RISC . Computer Business Review . Computergram 30 August 1991 . http www.cbronline.com news fujitsus 40m buys 44 of ibm refugees hal firm Fujitsu s 40m Buys 44 Of IBM Refugee s HAL Firm . Computer ... Heller Quits Top Job At HAL . Computer Business Review . Computergram 27 July 1993 . http www.cbronline.com news heller quits hal computer to steer fujitsu companies towards common unix Heller Quits HAL Computer To Steer Fujitsu Companies Towards Common UNIX . Computer Business Review . Computergram 24 November 1993 . http www.cbronline.com news fujitsu adds hal computer to its sparc collection Fujitsu Adds HAL Computer To Its SPARC Collection . Computer Business Review . Computergram 25 November 1993 . http www.cbronline.com news fujitsu buy the rest of hal Fujitsu Buy The Rest Of HAL . Computer ... Computing Environments To Talk . Computer Business Review . Computergram 30 March 1994 . http www.cbronline.com news hal software systems launches universal documents display HAL Software Systems Launches Universal Documents Display . Computer Business Review . Fujitsu Category Fujitsu Category ...   more details



  1. Equus Computer Systems

    Orphan date February 2009 Infobox Company company name Equus Computer Systems, Inc. company logo Image Equus.png company type Private company Private slogan The Largest Whitebox System Builder to the Channel foundation 1989 ref name crn1 http www.crn.com storage 193700247 Andy Juang, Founder & CEO, Equus Computer Systems Storage IT Channel News by CRN and VARBusiness Bot generated title ref headquarters Minnetonka, Minnesota , United States location Minnetonka, Minnesota , United States key people Andy Juang, President and CEO founders Andy Juang num employees 250 industry Computer hardware products Desktop computer Desktops br Server computing Servers br Laptop Notebook s br Peripheral s homepage http www.equuscs.com www.equuscs.com Equus Computer Systems, Inc. is an American computer hardware and services company with corporate offices in Minnetonka, Minnesota and main assembly facilities in City of Industry, California and Lombard, Illinois . It is a leading supplier of private brand computers to the value added reseller channel ref name crn2 http www.crn.com builders builder details.jhtml?c 1 CRN System Builders Bot generated title ref , though it also sells the Nobilis brand of personal computer PCs to many corporate customers as well as various custom computers to independent software vendor s. It is an employee owned private company, formerly majority owned by Andy Juang . ref name crn1 References references External links http www.equuscs.com Official Site Category Computer companies of the United States Category Companies based in Minnesota tech company stub ...   more details



  1. Tangerine Computer Systems

    United Kingdom British microcomputer company Tangerine Computer Systems ref The choice of the company s name, Tangerine , was inspired by the success of the then already famous in the computer business world Apple Computer . ref was founded in 1979 by Dr. Paul Johnson, Mark Rainer and Nigel Penton Tilbury in St Ives, Cambridgeshire St. Ives , Cambridgeshire The very first product was the successful TAN1648 VDU kit which received much acclaim in the technical press. The home computer market was beginning to move, albeit slowly, and it was essential to establish a presence. Development and expansion was imperative. It was decided that the latter two partners would relinquish their involvement in order to focus on their consultancy work. Barry Muncaster became involved operationally and the company moved to new premises in Ely, Cambridgeshire Ely , Cambridgeshire . The company was later renamed, and was known for most of the 1980s as Oric Products International . Microtan 65 main Tangerine Microtan 65 Image Tangerine Microtan 65 In System Rack.jpg thumb 300px right The Microtan 65 in the full System Rack enclosure and with the ASCII keyboard Tangerine produced one of the first MOS Technology 6502 6502 based kit computers, the Tangerine MICROTAN 65 Microtan 65 . It had a 3 Rack unit U form factor, a small amount of Random access memory memory RAM , a video character generator and RF Modulator UHF modulator for use with a Television TV set, and a simple latch for entering hexadecimal hex data from a keypad, and the computer was designed to be expandable. The manual came with a one kilobyte listing of Conway s Game of Life . An optional expansion board could be built with a UART ... Category Defunct computer hardware companies hr Tangerine Computer Systems it Tangerine Computer Systems pt Tangerine Computer Systems sv Tangerine Computer Systems ... Sinclair ZX Spectrum Tangerine s backers suggested a home computer and Tangerine formed Oric Products ...   more details



  1. Systems Plus Computer College

    Infobox University name Systems Plus Computer College Caloocan City Campus image image Spcflogo.png 150px A Commitment to Excellence established June 9, 1997 type Private College Private, Non Sectarian president Lourdes R. Bustamante city Caloocan City state Metro Manila country Philippines unde staff Approx. 50 campus 141 143 10th Avenue, between 6th and 7th Streets, Grace Park Systems Plus Computer College SPCC Caloocan City Campus is a Private College Private, Non Sectarian school in Caloocan City , Metro Manila , Philippines . The Pioneering Years SPCF Image Systems Plus College Foundation 2.jpg thumb 250px left School of SPCF Angeles as of 2009. On June 27, 1985 at Santa Isabel Building in Balibago, Angeles City, five incorporators opened Systems Plus, Inc. SPI . The organization s primary purpose was to conduct seminars for those who were planning to enter the electronic data processing as programmers, encoders and systems analyst. On July 7, 1985, it started tutorial programs for students and professionals. The same date also served as the school s foundation day. Systems Plus, Inc. attracted more enrollees. In June 1987, it offered associate courses and later on, bachelor s degree and graduate degree programs. The growth of the school was outstanding. The year 1989 marked the opening of two campuses in Cubao, Quezon City and in Miranda, Angeles City. Surviving the Adversities Image Behind Systems Plus.jpg thumb 250px right A rear view of the school. In school year 1990 1991, the enrollment figure went up to 1,215 but was greatly reduced to almost 50 in the next school year because of the eruption of Mount Pinatubo on June 16, 1991. In the same month, the United States ... of the school was changed from Systems Plus Computer Institute, Inc. to Systems Plus Computer College ... with the expected growth and development, the name of the school was changed from Systems Plus Computer College to Systems Plus College Foundation SPCF , Inc. A new school logo was adopted. The Commission ...   more details



  1. Magnuson Computer Systems

    Magnuson Computer Systems was a manufacturer of IBM compatible IBM mainframe mainframes . The Magnuson M80 range was available from the late 1970s and enjoyed limited success at a time when IBM struggled to ship machines. The company declared bankruptcy in early 1982 after IBM fixed its production problems Clarify date March 2010 , introduced new models, and slashed prices. External links http www.time.com time printout 0,8816,949693,00.html The Colossus That Works, Time Magazine, July 11, 1983. Retrieved December 31, 2007. See also Amdahl Corporation Category Defunct computer hardware companies Category Defunct computer companies of the United States ...   more details



  1. Pumping (computer systems)

    Unreferenced stub auto yes date December 2009 Other uses Pumping disambiguation Pumping , when referring to computer systems, is simply how many times per clock cycle data is being transmitted. Early types of system memory RAM , such as SDRAM , transmitted data on only the rising edge of the clock. With the advent of double data rate synchronous dynamic RAM or DDR SDRAM , the data was transmitted on both rising and falling edges. However, quad pumping has been used for a while for the front side bus FSB of a computer system. This works by transmitting data at the rising edge, peak, falling edge, and trough of each clock cycle. Intel computer systems and others use this technology to reach effective FSB speeds of 1600  MT s million transfers per second , even though the FSB clock speed is only 400  MHz cycles per second . A Phase locked loop Clock generation phase locked loop in the CPU then multiplies the FSB clock by a factor in order to get the CPU speed. Example A Core 2 Duo E6600 processor is listed as 2.4  GHz with a 1066  MHz FSB. The FSB is known to be quad pumped, so its clock frequency is 1066 4 266  MHz. Therefore, the CPU multiplier is 2400 266, or 9 . The DDR2 RAM that it is compatible with is known to be double pumped and to have an Input Output Bus twice that of the true FSB frequency effectively transferring data 4 times a clock cycle , so to run the system synchronously see Front side bus the type of RAM that is appropriate is quadruple 266  MHz, or DDR2 1066 PC2 8400 or PC2 8500, depending on the manufacturer s labeling. . DEFAULTSORT Pumping Computer Systems Category Computer memory Compu hardware stub ...   more details



  1. Computer Systems Research Group

    The Computer Systems Research Group 1979 1993 http www.findarticles.com p articles mi m0SMG is n14 ... Software Distribution Category University of California, Berkeley ja Computer Systems Research Group pl Computer Systems Research Group ru Computer Systems Research Group zh ...CSRG may also refer to China South Locomotive and Rolling Stock Industry Group Corporation The Computer Systems Research Group CSRG was a research group at the University of California, Berkeley that was dedicated to enhancing AT&T Unix operating system and funded by Defense Advanced Research Projects Agency . History Professor Bob Fabry of University of California, Berkeley Berkeley University of California acquired a UNIX license from AT&T in 1974. Berkeley started to adjust UNIX and distributed their version of UNIX as BSD . In 1980 Professor Fabry signed a contract with the Defense Advanced Research Projects Agency to develop UNIX even further to accommodate the specific requirements of the ARPAnet . With the funding of DARPA, Fabry created the Computer Systems Research Group. The BSD Berkeley Sockets Sockets API and Berkeley Fast File System are some of the most noteworthy innovations of the group. During the 1970s and 1980s, AT&T raised the licensing fee for UNIX to 100,000 200,000. This became a big problem for small research labs and companies who used BSD and the CSRG set up a goal for themselves to replace all the source code that originated from AT&T. They succeeded in 1994, but AT&T didn t agree and USL v. BSDi took Berkeley to court . After the settlement in 1994, CSRG distributed its last versions, called 4.4BSD Lite BSD licensed and 4.4BSD Encumbered UNIX licensed . The group was disbanded in 1995, though not without leaving a legacy OpenBSD , NetBSD and FreeBSD are all based on the 4.4BSD Lite distribution and continue to play an important role in the open source UNIX community today, including dictating the style of C programming used via Kernel Normal Form ...   more details



  1. Bachelor of Computer Information Systems

    The Bachelor of Computer Information Systems abbreviated BSc CIS UCAS G500 is an undergraduate or bachelor s degree , similar to the Bachelor of Science in Information Technology and Bachelor of Computer Science , but focused more on practical applications of technology to support organizations while adding value to their offerings. In order to apply technology effectively in this manner, a broad range ... as options to the degree program. Some computer information systems programs have received accreditation ... ref http www.calu.edu academics programs computer information systems index.htm ref Cedar ... programs technology bachelors degree computer information systems major programming bs ... Institute of Technology ref cite web title Bachelor of Computer Information Systems url http www.floridatechonline.com undergraduate bs computer information systems degree publisher Florida Institute ... Degree Programs Computer Information Systems ref St Francis Xavier University Stephen F. Austin State ... business administration accounting computer tech computer information systems aas.asp ref Texas ... programs undergraduate computer information systems ref University of Jordan University of Lincoln ref http www.lincoln.ac.uk socs courses undergraduate computer information systems default.asp ..., Selangor Darul Ehsan, Malaysia Academic degrees Category Bachelor s degrees Computer Information Systems ... University ref http www.devry.edu degree programs college engineering information sciences computer information systems about.jsp ref Drury University Eastern Washington University ref http www.ewu.edu CSHE Programs Computer Science CS Degrees BSCIS.xml ref Ferris State University ref http www.ferris.edu ... of Management Information Systems, Terry College of Business, University of Georgia http www.boun.edu.tr undergraduate applied disciplines management information systems.html Management Information Systems ... Information Systems Undergraduate Program at National Institute of Business Management NIBM ...   more details



  1. Frye Computer Systems

    Frye Computer Systems was a software company based in Boston, Massachusetts ref cite journal last van Kirk first Doug title PC managers consumed by software upgrades journal InfoWorld date 1993 05 31 page 57 ref . They were the developers of LAN monitoring software kit The Frye Utilities for Networks ref cite journal title LAN monitoring software The one that got away journal InfoWorld date 1995 07 24 page 70 ref , which won PC Magazine s Editor s Choice award in 1995. It was acquired in May 1995 by Seagate Technology Seagate ref cite journal last Leon first Mark title Seagate to buy Frye Computer journal InfoWorld date 1995 05 15 page 16 ref . References reflist Category Defunct software companies of the United States Category Computer security software companies Category Companies based in Boston, Massachusetts Compu company stub ...   more details



  1. GST Computer Systems

    of computer software for Microsoft Windows Windows operating systems. In July 2008 the company ...GST was a group of computer companies based in Cambridge , England , founded by Dr Jeff Fenton in June 1979. The company worked with Sinclair Research , Torch Computers , Acorn Computers , Monotype Corporation and Kwik Fit , amongst others. The group included GST Computer Systems the original name of the company. GST Professional Services a software consultancy that was sold and became OTIB A.T. GST Software Products produced retail software , most notably Timeworks Publisher . GST Training Centre a class based software training provider in Cambridgeshire, UK. Electric Software a games software label, producing titles for home computer s such as the Commodore 64 , Sinclair ZX Spectrum and MSX compatible models in the early 1980s. ref cite web url http www.videopac.org forums viewtopic.php?p 7828&sid 381cfc24fa933d5f37e53d1175d9ae9b title Videopac 64 Shark Hunter date 2007 08 10 work www.videopac.org accessdate 2009 03 26 ref GST Computer Systems started as a contract software development company. In 1983, it became involved with Sinclair Research, producing the 68K OS operating system later rejected by Sinclair and development software for the Sinclair QL . ref name about greenstreet cite web url http greenstreet online.com about.html title About Greenstreet work Greenstreet Online accessdate 2009 03 26 ref In 1985 it was approached by Atari to port products from the QL on to the just to be launched Atari ST . The word processing package 1st Word was bundled with every Atari ST for the first two years of its life and GST became the leading software supplier for the Atari ST ... NEBS PageMagic changed after objections from Adobe Systems Adobe , Macmillan Publisher, Canon Publisher ...?News Item 42 greenstreet Softwrap product announcement Category Computer companies of the United ... Defunct computer companies Category Companies established in 1979 UK company stub ict company stub ...   more details



  1. Alliant Computer Systems

    Notability date April 2009 Unreferenced date April 2009 Alliant Computer Systems was a computer company that designed and manufactured parallel computing systems. Together with Pyramid Technology and Sequent Computer Systems , Alliant s machines pioneered the symmetric multiprocessing market. One of the more successful companies in the group, over 650 Alliant systems were produced over their lifetime. History 1980s Alliant was founded, as Dataflow Systems, in May 1982 by Ron Gruner, Craig Mundie and Rich McAndrew to produce machines for scientific and engineering users who needed smaller, less costly machines than offerings from Cray Computer and similar high end vendors. Machines that addressed this market segment later became known as Minisupercomputer minisupercomputers . Alliant s first machines were announced in 1985, starting with the FX series. The FX series consisted of a number Computational Elements, or CEs, which included a set of Weitek 1064 1065 floating point unit FPU s and several custom designed support chips to implement a vector processor based upon the popular Motorola 68000 family Motorola 68000 architecture. These were augmented by the Interactive processing Interactive Processors , IPs, which used Motorola 68008 s and, subsequently, Motorola 68010 s and then Motorola ... parallelism data parallel processing among the CEs. Like many early multiprocessing systems, the FX .... In time more 4.2 BSD features were added. Systems were numerated for the largest potential number ... was hit by a series financial problems and went bankrupt in 1992. Various Alliant systems soldiered on in service for many years after that however, and were generally considered very reliable. The Computer History Museum has examples of the FX 8 and FX 1 from Convex Computer Corporation after Alliant s fall , but is seeking examples of FX 80 and FX 2800 configurations. Category Defunct computer hardware companies Category Defunct computer companies of the United States ja ...   more details



  1. Mercury Computer Systems

    Unreferenced date May 2011 Mercury Computer Systems, Inc. nasdaq MRCY provides high performance embedded, real time digital signal processing digital signal and digital image processing image processing solutions. Mercury designs and builds embedded systems embedded multicomputers, which may be considered to be either loosely coupled Non Uniform Memory Access NUMA computers or tightly coupled Cluster computing cluster s. Despite being marketed as COTS , the computers are generally customized to better fit application requirements. Popular applications include airborne military radar , sonar , software defined radio cellular telephone base stations for example , video transcoding , chip wafer inspection , medical scanner s of all types, and Classified information classified projects . In general ... high speed Direct memory access DMA to interact directly with IO hardware. Mercury Computer Systems ... is called Amira. The former Visualization Sciences Group of Mercury Computer Systems became in June ... and Analysis Software for Engineers and Scientists . External links The Mercury Computer Systems ... Chip Computer SHARC , and PowerPC . RACE is Mercury s second interconnect fabric. It is very similar ... kernel, which is provided today mainly for customers who are not yet ready for Linux. Systems can be configured today that run MCexec on some nodes, and Linux on others. Mercury systems in the past have ... allocates memory and communication resources. This can be slow on large systems, and is certainly ... running MCexec on the compute nodes. MCOE includes a single node Kernel computer science kernel called ... the high performance MCOE APIs. Filesystem and Computer terminal terminal Input output IO is very slow ... mediacenter pressrelease.aspx?id 7372 Press release of the acquisition of Single board computer SBC specialist Momentum Computer, Inc. in December 2004. CSP, Incorporated http www.cspi.com corp ... . Category Companies based in Massachusetts Category Computer companies of the United States ...   more details




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