|
IBM 8100
The IBM 8100 Information System, announced Oct. 3, 1978, was at one time IBM’s principal distributed processing engine, providing local processing capability under two incompatible operating systems ( DPPX and DPCX) and was a follow-on to the IBM 3790. The 8100, when used with the Distributed Processing Programming Executive (DPPX), was intended to provide turnkey distributed processing capabilities in a centrally controlled and managed network. It never saw much success—one anonymous source, according to '' PC Magazine'', called it a "boat anchor"—and became moribund when host-based networks went out of fashion. This, coupled with IBM's recognition that they had too many hardware and software systems with similar processing power and function, led to announcement in March 1986 that the 8100 line would not be expanded and a new System/370 The IBM System/370 (S/370) is a model range of IBM mainframe computers announced on June 30, 1970, as the successors to the Sy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IBM 3790
The IBM 3790 Communications System was one of the first distributed computing platforms. The 3790 was developed by IBM's Data Processing Division (DPD) and announced in 1974. It preceded the IBM 8100, announced in 1979. It was designed to be installed in branch offices, stores, subsidiaries, etc., and to be connected to the central host mainframe, using IBM Systems Network Architecture (SNA). Although its successor's role in distributed data processing was said to be "a turning point in the general direction of worldwide computer development," the 3790 was described by Datamation in March 1979 as "less than successful." System description IBM described it as "a programmable, operator oriented terminal system." Components The 3790 supported * up to 16 IBM 3277 display stations * an integrated floppy disk unit * an integrated 120 lines per minute (lpm) line printer * up to three 3292 auxiliary control units * up to four 3793 keyboard-printers * a Synchronous Data Link Control ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Distributed Computing
A distributed system is a system whose components are located on different networked computers, which communicate and coordinate their actions by passing messages to one another from any system. Distributed computing is a field of computer science that studies distributed systems. The components of a distributed system interact with one another in order to achieve a common goal. Three significant challenges of distributed systems are: maintaining concurrency of components, overcoming the lack of a global clock, and managing the independent failure of components. When a component of one system fails, the entire system does not fail. Examples of distributed systems vary from SOA-based systems to massively multiplayer online games to peer-to-peer applications. A computer program that runs within a distributed system is called a distributed program, and ''distributed programming'' is the process of writing such programs. There are many different types of implementations for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IBM DPPX
Distributed Processing Programming Executive is a discontinued operating system introduced by IBM, pre-installed on the IBM 8100 and later ported to the ES/9370. Brief history * It was first introduced on the IBM 8100 series, which was released in 1978. * 1987 saw the release of Distributed Processing Programming Executive System Product (DPPX/SP) Release 4. * In 1986, IBM decided to cease the IBM 8100 architecture to consolidate its hardware and software families. * In 1988, they released DPPX/370 which ran on the ES/9370 processors (an S/370 model). * By the end of June 1997, DPPX/370 was officially retired. Architecture DPPX was written in Programming Language for Distributed Systems (PL/DS), a PL/I-derived systems programming language, similar to the PL/S PL/S, short for Programming Language/Systems, is a "machine-oriented" programming language based on PL/I. It was developed by IBM in the late 1960s, under the name Basic Systems Language (BSL), as a replacement for as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DPCX
DPCX (Distributed Processing Control eXecutive) was an operating system for the IBM 8100 small computer system. IBM hoped it would help their installed base of IBM 3790 customers migrate to the 8100 and the DPPX operating system. It was mainly deployed to support a word processing system, ''Distributed Office Support Facility'' (DOSF) which was derived from the earlier IBM 3730 word processing system. Like DPPX, it was written in the PL/S-like PL/DS language. The applications, including much of DOSF, however, were written an interpreted language that was "compiled" using the System/370 assembler macro facility. The 8100/DPCX/DOSF system was the first type of distributed system to connect to the IBM Distributed Office Support System (DISOSS) running on data host.IBM Red Book DISOSS Later versions of DISOSS relied on SNA Distribution System (SNADS) and eventually became peer-to-peer communication of documents which complied with Document Interchange Architecture (DIA) and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PC Magazine
''PC Magazine'' (shortened as ''PCMag'') is an American computer magazine published by Ziff Davis. A print edition was published from 1982 to January 2009. Publication of online editions started in late 1994 and have continued to the present day. Overview ''PC Magazine'' provides reviews and previews of the latest hardware and software for the information technology professional. Articles are written by leading experts including John C. Dvorak, whose regular column and "Inside Track" feature were among the magazine's most popular attractions. Other regular departments include columns by long-time editor-in-chief Michael J. Miller ("Forward Thinking"), Bill Machrone, and Jim Louderback, as well as: * "First Looks" (a collection of reviews of newly released products) * "Pipeline" (a collection of short articles and snippets on computer-industry developments) * "Solutions" (which includes various how-to articles) * "User-to-User" (a section in which the magazine's experts ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
System/370
The IBM System/370 (S/370) is a model range of IBM mainframe computers announced on June 30, 1970, as the successors to the System/360 family. The series mostly maintains backward compatibility with the S/360, allowing an easy migration path for customers; this, plus improved performance, were the dominant themes of the product announcement. In September 1990, the System/370 line was replaced with the System/390. Evolution The original System/370 line was announced on June 30, 1970, with first customer shipment of the Models 155 and 165 planned for February 1971 and April 1971 respectively. The 155 first shipped in January 1971. System/370 underwent several architectural improvements during its roughly 20-year lifetime. The following features mentioned in Principles of Operation are either optional on S/360 but standard on S/370, introduced with S/370 or added to S/370 after announcement. *Branch and Save *Channel Indirect Data Addressing *Channel-Set Switching *Clear I/O * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ES/9370
The IBM 9370 systems are "baby mainframe" midrange computers, released 1986 at the very low end of, and compatible with System/370. The media of the day, referring to the VAX systems manufactured by Digital Equipment Corporation (DEC), carried IBM's alleged " VAX Killer" phrase, albeit often skeptically. History The IBM 9370 was created in the aftermath of the failed Fort Knox project, which attempted to consolidate all of IBM's midrange systems into a single IBM 801-based hardware platform. The announcement described the IBM 9370 as a " super-mini computer" for commercial and engineering/scientific use—compact, rack-mounted, designed for an office environment, not needing a data center to be used. At the time of announcement the systems were positioned between IBM's midrange systems (IBM System/36 and IBM System/38), and the IBM 4300 mainframe series in performance. The IBM 9370 was partially a replacement for the also-not-so-successful IBM 8100 distributed processing eng ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IBM 3101
The IBM 3101 ASCII Display Station, and IBM's subsequent products, the 3151/315X and 3161/316X, are display terminals with asynchronous serial communication (start-stop signaling) that were used with a variety of IBM and non-IBM computers during the 1980s–90s, especially the data processing terminals on non-IBM minicomputers, IBM Series/1 and IBM AIX computers. Models IBM 3101 The IBM 3101 ASCII Display Station appeared in 1979. It featured: * 12-inch green-phosphor CRT display * 24 lines of 80 characters * ASCII Keyboard (US English, Belgian, Danish, Finnish, French, German, Italian, Japanese Katakana, Norwegian, Portuguese, Spanish, Swedish, Swiss French, Swiss German, UK English) * Asynchronous communication: EIA RS-232C interface for short distance; EIA RS-422 interface for longer distance * Baud rates of 200/300 to 19,200 (bps) Unusually for IBM's practices at the time, it also: * Utilized various non-IBM technologies * Required initial setup by the user * Consisted o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IBM 3270
The IBM 3270 is a family of block oriented display and printer computer terminals introduced by IBM in 1971 and normally used to communicate with IBM mainframes. The 3270 was the successor to the IBM 2260 display terminal. Due to the text color on the original models, these terminals are informally known as '' green screen'' terminals. Unlike a character-oriented terminal, the 3270 minimizes the number of I/O interrupts required by transferring large blocks of data known as data streams, and uses a high speed proprietary communications interface, using coaxial cable. IBM no longer manufactures 3270 terminals, but the IBM 3270 protocol is still commonly used via TN3270 clients, 3270 terminal emulation or web interfaces to access mainframe-based applications, which are sometimes referred to as ''green screen applications''. Principles The 3270 series was designed to connect with mainframe computers, often at a remote location, using the technology then available in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hursley House
Hursley House is an 18th-century Queen Anne style mansion in Hursley, near Winchester in the English county of Hampshire. The building is Grade II* listed. History The Hursley estate was bought by William Heathcote, MP from the daughters of Richard Cromwell. Cromwell had acquired the estate by marriage to the daughter of Richard Major, MP. Heathcote commissioned the present house to be built between 1721 and 1724, during the reign of George I, and was created a baronet in 1733. The estate descended in the Heathcote family to the 5th Baronet, whose widow sold it after his death in 1881 to Joseph Baxendale, the owner of the Pickfords logistics and removal company. He sold it in 1902 to Sir George Cooper whose wife, Mary Emma Smith, an American railways heiress from Chicago, commissioned architect Alexander Marshall Mackenzie to carry out extensive development work in 1902 to create the house that can be seen today. Sir George was created a baronet in 1905. During the First W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> ES/9370")
