OpenVMS

OpenVMS is a closed-source, proprietary computer operating system for use in general-purpose computing. ^[1]

Accelerated Graphics Port

The Accelerated Graphics Port (AGP) was designed as a high-speed point-to-point channel for attaching a video card to a computer system, primarily to assist in the acceleration of 3D computer graphics.

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Access control list

An access control list (ACL), with respect to a computer file system, is a list of permissions attached to an object.

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Ada (programming language)

Ada is a structured, statically typed, imperative, and object-oriented high-level computer programming language, extended from Pascal and other languages.

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ANSI escape code

ANSI escape sequences are a standard for in-band signaling to control the cursor location, color, and other options on video text terminals.

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Apache ActiveMQ

Apache ActiveMQ is an open source message broker written in Java together with a full Java Message Service (JMS) client.

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Apache HTTP Server

The Apache HTTP Server, colloquially called Apache, is a free and open-source cross-platform web server, released under the terms of Apache License 2.0.

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Apache Subversion

Apache Subversion (often abbreviated SVN, after its command name svn) is a software versioning and revision control system distributed as open source under the Apache License.

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Apache Tomcat

Apache Tomcat, often referred to as Tomcat Server, is an open-source Java Servlet Container developed by the Apache Software Foundation (ASF).

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Application Control Management System

Application Control Management System (Application Control and Management System) (ACMS) is a transaction processing monitor software system from HP for computers running the OpenVMS operating system.

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ASCII

ASCII, abbreviated from American Standard Code for Information Interchange, is a character encoding standard for electronic communication.

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Asynchronous System Trap

Asynchronous System Trap (AST) refers to a mechanism used in several computer operating systems designed by the former Digital Equipment Corporation (DEC) of Maynard, Massachusetts.

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Availability

In reliability theory and reliability engineering, the term availability has the following meanings.

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BASIC

BASIC (an acronym for Beginner's All-purpose Symbolic Instruction Code) is a family of general-purpose, high-level programming languages whose design philosophy emphasizes ease of use.

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Batch processing

In computing, batch processing refers to a computer working through a queue or batch of separate jobs (programs) without manual intervention (non-interactive).

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BLISS

BLISS is a system programming language developed at Carnegie Mellon University by W. A. Wulf, D. B. Russell, and A. N. Habermann around 1970.

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C (programming language)

C (as in the letter ''c'') is a general-purpose, imperative computer programming language, supporting structured programming, lexical variable scope and recursion, while a static type system prevents many unintended operations.

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C++

C++ ("see plus plus") is a general-purpose programming language.

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C0 and C1 control codes

The C0 and C1 control code or control character sets define control codes for use in text by computer systems that use the ISO/IEC 2022 system of specifying control and graphic characters.

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COBOL

COBOL (an acronym for "common business-oriented language") is a compiled English-like computer programming language designed for business use.

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Command-line interface

A command-line interface or command language interpreter (CLI), also known as command-line user interface, console user interface and character user interface (CUI), is a means of interacting with a computer program where the user (or client) issues commands to the program in the form of successive lines of text (command lines).

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Common Criteria

The Common Criteria for Information Technology Security Evaluation (abbreviated as Common Criteria or CC) is an international standard (ISO/IEC 15408) for computer security certification.

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Common Desktop Environment

The Common Desktop Environment (CDE) is a desktop environment for Unix and OpenVMS, based on the Motif widget toolkit.

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Compaq

Compaq (a portmanteau of Compatibility And Quality; occasionally referred to as CQ prior to its final logo) was a company founded in 1982 that developed, sold, and supported computers and related products and services.

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Comparison of operating systems

These tables provide a comparison of operating systems, of computer devices, as listing general and technical information for a number of widely used and currently available PC or handheld (including smartphone and tablet computer) operating systems.

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Computer cluster

A computer cluster is a set of loosely or tightly connected computers that work together so that, in many respects, they can be viewed as a single system.

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Computer terminal

A computer terminal is an electronic or electromechanical hardware device that is used for entering data into, and displaying or printing data from, a computer or a computing system.

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CURL

cURL (/kɝl/ or /kə:l/) is a computer software project providing a library and command-line tool for transferring data using various protocols.

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Database

A database is an organized collection of data, stored and accessed electronically.

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Dave Cutler

David Neil "Dave" Cutler Sr. (born March 13, 1942) is an American software engineer, a designer, and a developer of several operating systems in the computer industry.

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DEC Alpha

Alpha, originally known as Alpha AXP, is a 64-bit reduced instruction set computing (RISC) instruction set architecture (ISA) developed by Digital Equipment Corporation (DEC), designed to replace their 32-bit VAX complex instruction set computer (CISC) ISA.

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DEC Prism

Prism is a 32-bit RISC instruction set architecture (ISA) developed by Digital Equipment Corporation (DEC).

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DECnet

DECnet is a suite of network protocols created by Digital Equipment Corporation.

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DEF CON

DEF CON (also written as DEFCON, Defcon, or DC) is one of the world's largest hacker conventions, held annually in Las Vegas, Nevada, with the first DEF CON taking place in June 1993.

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DIBOL

DIBOL or Digital's Business Oriented Language is a general-purpose, procedural, imperative programming language, designed for use in Management Information Systems (MIS) software development.

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Dick Hustvedt

Richard "Dick" Irvin Hustvedt (February 18, 1946 – April 15, 2008) was a renowned software engineer, designer and developer of several operating systems including Digital Equipment Corporation's RSX-11, and VMS.

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DIGITAL Command Language

DIGITAL Command Language (DCL) is the standard command language adopted by most of the operating systems (OSs) that were sold by the former Digital Equipment Corporation (which was acquired by Compaq, which was in turn acquired by Hewlett-Packard).

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Digital Equipment Corporation

Digital Equipment Corporation, also known as DEC and using the trademark Digital, was a major American company in the computer industry from the 1950s to the 1990s.

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Digital Linear Tape

Digital Linear Tape (DLT; previously called CompacTape) is a magnetic tape data storage technology developed by Digital Equipment Corporation (DEC) from 1984 onwards.

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Digital Storage Systems Interconnect

The Digital Storage Systems Interconnect (DSSI) is a bus developed by Digital Equipment Corporation for connecting storage devices and clustering VAX systems and support was extended to MIPS based DECsystem and later to Alpha processor based AlphaServer systems.

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Diskless node

A diskless node (or diskless workstation) is a workstation or personal computer without disk drives, which employs network booting to load its operating system from a server.

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Distributed lock manager

Operating systems use lock managers to organise and serialise the access to resources.

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English language

English is a West Germanic language that was first spoken in early medieval England and is now a global lingua franca.

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Epoch (reference date)

In the fields of chronology and periodization, an epoch is an instant in time chosen as the origin of a particular era.

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Erlang (programming language)

Erlang is a general-purpose, concurrent, functional programming language, as well as a garbage-collected runtime system.

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Ethernet

Ethernet is a family of computer networking technologies commonly used in local area networks (LAN), metropolitan area networks (MAN) and wide area networks (WAN).

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Event flag

An event flag is a process synchronization primitive in the OpenVMS operating system.

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File system

In computing, a file system or filesystem controls how data is stored and retrieved.

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Files-11

Files-11, also known as on-disk structure, is the file system used by Digital Equipment Corporation OpenVMS operating system, and also (in a simpler form) by the older RSX-11.

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Fortran

Fortran (formerly FORTRAN, derived from Formula Translation) is a general-purpose, compiled imperative programming language that is especially suited to numeric computation and scientific computing.

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Gigabit Ethernet

In computer networking, Gigabit Ethernet (GbE or 1 GigE) is a term describing various technologies for transmitting Ethernet frames at a rate of a gigabit per second (1,000,000,000 bits per second), as defined by the IEEE 802.3-2008 standard.

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Git

Git is a version control system for tracking changes in computer files and coordinating work on those files among multiple people.

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GNU Privacy Guard

GNU Privacy Guard (GnuPG or GPG) is a free software replacement for Symantec's PGP cryptographic software suite.

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Gordon Bell

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Graphical user interface

The graphical user interface (GUI), is a type of user interface that allows users to interact with electronic devices through graphical icons and visual indicators such as secondary notation, instead of text-based user interfaces, typed command labels or text navigation.

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Group coded recording

In computer science, group coded recording or group code recording (GCR) refers to several distinct but related encoding methods for magnetic media.

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Hewlett Packard Enterprise

Hewlett Packard Enterprise Company (commonly referred to as HPE) is an American multinational enterprise information technology company based in Palo Alto, California, founded on 1 November 2015 as part of splitting of the Hewlett-Packard company.

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Hewlett-Packard

The Hewlett-Packard Company (commonly referred to as HP) or shortened to Hewlett-Packard was an American multinational information technology company headquartered in Palo Alto, California.

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HP BASIC for OpenVMS

HP BASIC for OpenVMS is the latest name for a dialect of the BASIC programming language created by Digital Equipment Corporation (DEC) and now owned by Hewlett-Packard Enterprise (HPE).

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HP Superdome

The HP Superdome is a high-end server computer developed and produced by Hewlett Packard Enterprise (formerly Hewlett-Packard).

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IA-64

IA-64 (also called Intel Itanium architecture) is the instruction set architecture (ISA) of the Itanium family of 64-bit Intel microprocessors.

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IEEE 802.2

IEEE 802.2 is the original name of the ISO/IEC 8802-2 standard which defines logical link control (LLC) as the upper portion of the data link layer of the OSI Model.

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IEEE 802.3

IEEE 802.3 is a working group and a collection of Institute of Electrical and Electronics Engineers (IEEE) standards produced by the working group defining the physical layer and data link layer's media access control (MAC) of wired Ethernet.

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Info-ZIP

Info-ZIP is a set of open-source software to handle ZIP archives.

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Input/output

In computing, input/output or I/O (or, informally, io or IO) is the communication between an information processing system, such as a computer, and the outside world, possibly a human or another information processing system.

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Intel

Intel Corporation (stylized as intel) is an American multinational corporation and technology company headquartered in Santa Clara, California, in the Silicon Valley.

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Internet protocol suite

The Internet protocol suite is the conceptual model and set of communications protocols used on the Internet and similar computer networks.

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ISO 3307

ISO 3307 is an international standard for date and time representations issued by the International Organization for Standardization (ISO).

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ISO 9660

ISO 9660 is a file system for optical disc media.

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ISO/IEC 2022

ISO/IEC 2022 Information technology—Character code structure and extension techniques, is an ISO standard (equivalent to the ECMA standard ECMA-35) specifying.

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ISO/IEC 646

ISO/IEC 646 is the name of a set of ISO standards, described as Information technology — ISO 7-bit coded character set for information interchange and developed in cooperation with ASCII at least since 1964.

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Itanium

Itanium is a family of 64-bit Intel microprocessors that implement the Intel Itanium architecture (formerly called IA-64).

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Java (programming language)

Java is a general-purpose computer-programming language that is concurrent, class-based, object-oriented, and specifically designed to have as few implementation dependencies as possible.

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Julian day

Julian day is the continuous count of days since the beginning of the Julian Period and is used primarily by astronomers.

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L4 microkernel family

L4 is a family of second-generation microkernels, generally used to implement Unix-like operating systems, but also used in a variety of other systems.

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Lisp (programming language)

Lisp (historically, LISP) is a family of computer programming languages with a long history and a distinctive, fully parenthesized prefix notation.

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Living Computers: Museum + Labs

Living Computers: Museum + Labs (LCM+L) is a computer and technology museum located in the SoDo neighborhood of Seattle, Washington.

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Local area network

A local area network (LAN) is a computer network that interconnects computers within a limited area such as a residence, school, laboratory, university campus or office building.

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Local Area Transport

Local Area Transport (LAT) is a non-routable (Data Link Layer) networking technology developed by Digital Equipment Corporation to provide connection between the DECserver 90, 100, 200, 300, 500, 700 and DECserver 900 terminal servers and Digital's VAX and Alpha and MIPS host computers via Ethernet, giving communication between those hosts and serial devices such as video terminals and printers.

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Lua (programming language)

Lua (from meaning moon) is a lightweight, multi-paradigm programming language designed primarily for embedded use in applications.

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Luxury goods

In economics, a luxury good (or upmarket good) is a good for which demand increases more than proportionally as income rises, and is a contrast to a "necessity good", where demand increases proportionally less than income.

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Maintenance Operations Protocol

The Maintenance Operation Protocol (MOP) is used for utility services such as uploading and downloading system software, remote testing and problem diagnosis.

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Manchester code

In telecommunication and data storage, Manchester code (also known as phase encoding, or PE) is a line code in which the encoding of each data bit is either low then high, or high then low, for equal time.

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MariaDB

MariaDB is a community-developed fork of the MySQL relational database management system intended to remain free under the GNU GPL.

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MDL (programming language)

MDL (the MIT Design Language) is a descendant of the Lisp programming language.

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Message transfer agent

Within Internet message handling services (MHS), a message transfer agent or mail transfer agent (MTA) or mail relay is software that transfers electronic mail messages from one computer to another using a client–server application architecture.

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Microsoft

Microsoft Corporation (abbreviated as MS) is an American multinational technology company with headquarters in Redmond, Washington.

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MicroVAX

The MicroVAX was a family of low-cost minicomputers developed and manufactured by Digital Equipment Corporation (DEC).

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Modula-2

Modula-2 is a computer programming language designed and developed between 1977 and 1985 by Niklaus Wirth at the Swiss Federal Institute of Technology in Zurich (ETH Zurich) as a revision of Pascal to serve as the sole programming language for the operating system and application software for the personal workstation Lilith.

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Monolithic kernel

A monolithic kernel is an operating system architecture where the entire operating system is working in kernel space and is alone in supervisor mode.

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Motif (software)

In computing, Motif refers to both a graphical user interface (GUI) specification and the widget toolkit for building applications that follow that specification under the X Window System on Unix and Unix-like operating systems.

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MQTT

MQTT (Message Queuing Telemetry Transport) is an ISO standard (ISO/IEC PRF 20922) publish-subscribe-based messaging protocol.

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Multi-user software

Multi-user software is software that allows access by multiple users of a computer.

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Multiprocessing

Multiprocessing is the use of two or more central processing units (CPUs) within a single computer system.

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Nanosecond

A nanosecond (ns) is an SI unit of time equal to one thousand-millionth of a second (or one billionth of a second), that is, 1/1,000,000,000 of a second, or 10 seconds.

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National Security Agency

The National Security Agency (NSA) is a national-level intelligence agency of the United States Department of Defense, under the authority of the Director of National Intelligence.

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Non-return-to-zero

In telecommunication, a non-return-to-zero (NRZ) line code is a binary code in which ones are represented by one significant condition, usually a positive voltage, while zeros are represented by some other significant condition, usually a negative voltage, with no other neutral or rest condition.

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Non-uniform memory access

Non-uniform memory access (NUMA) is a computer memory design used in multiprocessing, where the memory access time depends on the memory location relative to the processor.

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Open system (computing)

Open systems are computer systems that provide some combination of interoperability, portability, and open software standards.

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Open-source model

The open-source model is a decentralized software-development model that encourages open collaboration.

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OpenGL

Open Graphics Library (OpenGL) is a cross-language, cross-platform application programming interface (API) for rendering 2D and 3D vector graphics.

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OpenVMS

OpenVMS is a closed-source, proprietary computer operating system for use in general-purpose computing.

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Operating system

An operating system (OS) is system software that manages computer hardware and software resources and provides common services for computer programs.

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OPS5

OPS5 is a rule-based or production system computer language, notable as the first such language to be used in a successful expert system, the R1/XCON system used to configure VAX computers.

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Oracle Database

Oracle Database (commonly referred to as Oracle RDBMS or simply as Oracle) is a multi-model database management system produced and marketed by Oracle Corporation.

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Oracle Rdb

Oracle Rdb is a relational database management system (RDBMS) for the Hewlett-Packard OpenVMS operating system.

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Pascal (programming language)

Pascal is an imperative and procedural programming language, which Niklaus Wirth designed in 1968–69 and published in 1970, as a small, efficient language intended to encourage good programming practices using structured programming and data structuring. It is named in honor of the French mathematician, philosopher and physicist Blaise Pascal. Pascal was developed on the pattern of the ALGOL 60 language. Wirth had already developed several improvements to this language as part of the ALGOL X proposals, but these were not accepted and Pascal was developed separately and released in 1970. A derivative known as Object Pascal designed for object-oriented programming was developed in 1985; this was used by Apple Computer and Borland in the late 1980s and later developed into Delphi on the Microsoft Windows platform. Extensions to the Pascal concepts led to the Pascal-like languages Modula-2 and Oberon.

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PDP-11

The PDP-11 is a series of 16-bit minicomputers sold by Digital Equipment Corporation (DEC) from 1970 into the 1990s, one of a succession of products in the PDP series.

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Perl

Perl is a family of two high-level, general-purpose, interpreted, dynamic programming languages, Perl 5 and Perl 6.

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PHP

PHP: Hypertext Preprocessor (or simply PHP) is a server-side scripting language designed for Web development, but also used as a general-purpose programming language.

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PL/I

PL/I (Programming Language One, pronounced) is a procedural, imperative computer programming language designed for scientific, engineering, business and system programming uses.

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POSIX

The Portable Operating System Interface (POSIX) is a family of standards specified by the IEEE Computer Society for maintaining compatibility between operating systems.

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PostgreSQL

PostgreSQL, often simply Postgres, is an object-relational database management system (ORDBMS) with an emphasis on extensibility and standards compliance.

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Processor register

In computer architecture, a processor register is a quickly accessible location available to a computer's central processing unit (CPU).

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Programming language

A programming language is a formal language that specifies a set of instructions that can be used to produce various kinds of output.

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Proprietary software

Proprietary software is non-free computer software for which the software's publisher or another person retains intellectual property rights—usually copyright of the source code, but sometimes patent rights.

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Python (programming language)

Python is an interpreted high-level programming language for general-purpose programming.

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QIO

QIO (Queue I/O) is a term used in several computer operating systems designed by the former Digital Equipment Corporation (DEC) of Maynard, Massachusetts.

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Rainbow Series

The Rainbow Series (sometimes known as the Rainbow Books) is a series of computer security standards and guidelines published by the United States government in the 1980s and 1990s.

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Real-time operating system

A real-time operating system (RTOS) is an operating system (OS) intended to serve real-time applications that process data as it comes in, typically without buffer delays.

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Record Management Services

Record Management Services (RMS) are procedures in the VMS, RSTS/E, RT-11 and high-end RSX-11 operating systems that programs may call to process files and records within files.

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Reduced instruction set computer

A reduced instruction set computer, or RISC (pronounced 'risk'), is one whose instruction set architecture (ISA) allows it to have fewer cycles per instruction (CPI) than a complex instruction set computer (CISC).

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RSX-11

RSX-11 is a discontinued family of multi-user real-time operating systems for PDP-11 computers created by Digital Equipment Corporation.

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Ruby (programming language)

Ruby is a dynamic, interpreted, reflective, object-oriented, general-purpose programming language.

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Runtime library

In computer programming, a runtime library (RTL) is a set of low-level routines used by a compiler to invoke some of the behaviors of a runtime environment, by inserting calls to the runtime library into compiled executable binary.

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Samba (software)

Samba is a free software re-implementation of the SMB/CIFS networking protocol, and was originally developed by Andrew Tridgell.

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Scala (programming language)

Scala is a general-purpose programming language providing support for functional programming and a strong static type system.

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SCSI

Small Computer System Interface (SCSI) is a set of standards for physically connecting and transferring data between computers and peripheral devices.

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Sequence And Batch Language

The Sequence And Batch Language (SABL) is used on Digital Equipment Corporation (DEC) systems running OpenVMS and on the current D/3 Distributed Control System from.

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Server (computing)

In computing, a server is a computer program or a device that provides functionality for other programs or devices, called "clients".

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Shell (computing)

In computing, a shell is a user interface for access to an operating system's services.

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Stack (abstract data type)

In computer science, a stack is an abstract data type that serves as a collection of elements, with two principal operations.

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SWIG

The Simplified Wrapper and Interface Generator (SWIG) is an open-source software tool used to connect computer programs or libraries written in C or C++ with scripting languages such as Lua, Perl, PHP, Python, R, Ruby, Tcl, and other languages like C#, Java, JavaScript, Go, Modula-3, OCaml, Octave, Scilab and Scheme.

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System Reference Manual

The SRM firmware (also called the SRM console) is the boot firmware written by Digital Equipment Corporation (DEC) for computer systems based on the Alpha AXP microprocessor.

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System time

In computer science and computer programming, system time represents a computer system's notion of the passing of time.

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Terry Shannon (IT)

Terry Shannon (August 16, 1952 – May 26, 2005) was an American information technology consultant, journalist and author.

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Time-sharing

In computing, time-sharing is the sharing of a computing resource among many users by means of multiprogramming and multi-tasking at the same time.

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Transaction processing

Transaction processing is information processing in computer science that is divided into individual, indivisible operations called transactions.

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Unified Extensible Firmware Interface

The Unified Extensible Firmware Interface (UEFI) is a specification that defines a software interface between an operating system and platform firmware.

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United States Department of Defense

The Department of Defense (DoD, USDOD, or DOD) is an executive branch department of the federal government of the United States charged with coordinating and supervising all agencies and functions of the government concerned directly with national security and the United States Armed Forces.

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Unix

Unix (trademarked as UNIX) is a family of multitasking, multiuser computer operating systems that derive from the original AT&T Unix, development starting in the 1970s at the Bell Labs research center by Ken Thompson, Dennis Ritchie, and others.

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VAX

VAX is a discontinued instruction set architecture (ISA) developed by Digital Equipment Corporation (DEC) in the mid-1970s.

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VAX 6000

The VAX 6000 was a family of minicomputers developed and manufactured by Digital Equipment Corporation (DEC) using processors implementing the VAX instruction set architecture (ISA).

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VAX 7000/10000

The VAX 7000 and VAX 10000 were a series of high-end multiprocessor minicomputers developed and manufactured by Digital Equipment Corporation (DEC), introduced in July 1992.

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VAX 8000

The VAX 8000 is a discontinued family of minicomputers developed and manufactured by Digital Equipment Corporation (DEC) using processors implementing the VAX instruction set architecture (ISA).

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VAX Macro

VAX Macro is the computer assembly language implementing the instruction set for the line of CPUs designed to run the OpenVMS operating system created by Digital Equipment Corporation in 1977.

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VAX-11

The VAX-11 is a discontinued family of minicomputers developed and manufactured by Digital Equipment Corporation (DEC) using processors implementing the VAX instruction set architecture (ISA).

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VAXstation

The VAXstation was a family of workstation computers developed and manufactured by Digital Equipment Corporation (DEC) using processors implementing the VAX instruction set architecture (ISA).

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Virtual memory

In computing, virtual memory (also virtual storage) is a memory management technique that provides an "idealized abstraction of the storage resources that are actually available on a given machine" which "creates the illusion to users of a very large (main) memory." The computer's operating system, using a combination of hardware and software, maps memory addresses used by a program, called virtual addresses, into physical addresses in computer memory.

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VMScluster

A VMScluster is a computer cluster involving a group of computers running the OpenVMS operating system.

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VT100

The VT100 is a video terminal, introduced in August 1978 by Digital Equipment Corporation (DEC).

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Windowing system

In computing, a windowing system (or window system) is software that manages separately different parts of display screens.

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Windows NT

Windows NT is a family of operating systems produced by Microsoft, the first version of which was released in July 1993.

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X Window System

The X Window System (X11, or shortened to simply X) is a windowing system for bitmap displays, common on UNIX-like computer operating systems.

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X86

x86 is a family of backward-compatible instruction set architectures based on the Intel 8086 CPU and its Intel 8088 variant.

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X86-64

x86-64 (also known as x64, x86_64, AMD64 and Intel 64) is the 64-bit version of the x86 instruction set.

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Year 10,000 problem

The Year 10,000 problem (also known as the Y10K problem or the deca-millennium bug) is the class of all potential time formatting and storage bugs that would emerge when the need to express years with five digits arises.

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Year 2038 problem

The Year 2038 problem relates to representing time in many digital systems as number of seconds passed since 1 January 1970 and storing it as a signed 32-bit integer.

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ZeroMQ

ZeroMQ (also spelled ØMQ, 0MQ or ZMQ) is a high-performance asynchronous messaging library, aimed at use in distributed or concurrent applications.

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32-bit

32-bit microcomputers are computers in which 32-bit microprocessors are the norm.

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64-bit computing

In computer architecture, 64-bit computing is the use of processors that have datapath widths, integer size, and memory address widths of 64 bits (eight octets).

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Redirects here:

Open VMS, Open vms, OpenVMS 7.2, Openvms, VAX/VMS, VMS (operating system), VMS Software Inc, Vax/vms, Virtual Memory System.

References

[1] https://en.wikipedia.org/wiki/OpenVMS

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