Research any topic before you write.

Find related topics. | Discover entities. | See connections. | Build a topical map.

PL/I: Standards, History, Technology & Science

PL/I (Programming Language One, pronounced /piː ɛl wʌn/ and sometimes written PL/1) is a procedural, imperative computer programming language initially developed by IBM. It is designed for scientific, engineering, business and system programming. It has been in continuous use by academic, commercial and industrial organizations since it was introduced in…

Language: English [EN]
Use the mouse wheel or two fingers (on touchscreens) to zoom in and out of the map.
100%
More settings
100% 100% 100% 100% 100%

PL/I topic overview

The analysis highlights Standards, History, Technology and Science as prominent areas in the source structure around PL/I. 1 topic appears in more than one source area, which can help identify connections that are less obvious in a linear reading.

Related topics
217
Source areas
14
Connected nodes
232
Extracted relationships
558
Concept neighborhoods
63
Bridge connections
232

What this topic covers Research coverage

Source areas are shown by the number of related topics found in each part of the analysis. Use smaller areas too: they can reveal specialized angles and content gaps.

Implementations · 71 topics
PL/I dialects · 34 topics
Overview · 25 topics
Early history · 21 topics
Standardization · 18 topics
Usage · 15 topics
Goals and principles · 13 topics
Criticisms · 8 topics
Language summary · 4 topics
Special topics in PL/I · 3 topics
Evolution of the PL/I language · 2 topics
Standards · 2 topics
Reference manuals · 1 topics
Textbooks · 1 topics

Smaller areas are not necessarily less important. They contain fewer connections in this analysis and can be useful for finding specialized angles or coverage gaps.

Key facts & relationships

High-confidence facts extracted from structured source data. Use them as anchors for further research.

Designed by
IBM, SHARE Language Development Committee, ISO
First appeared
1964; 62 years ago (1964)
Paradigm
Procedural, imperative, structured

Explore all related topics Closing gaps

Browse the complete topic structure, not only the most central items. Less prominent entities and concepts can reveal missing angles, specialized context and useful research gaps. Each item opens a new analysis centered on that subject.

Overview

Early history

Goals and principles

Language summary

Standardization

Implementations

PL/I dialects

Usage

Evolution of the PL/I language

Criticisms

Special topics in PL/I

Textbooks

  • ISBN ISBN (identifier)

Standards

  • ECMA Ecma International
  • ISO International Organization for Standardization

Reference manuals

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

How PL/I connects Entity context

The extracted context around PL/I shows recurring relationship patterns in the source. For example, PL/I → AA-H952E-TM, AG94-02, Burroughs Corporation, C28-6571, CDC, CDC Cyber, Conversational Programming Language User's, DEC-10-LCPUA-A-D, December, Detroit, Digital Equipment Corporation, Ed, Enterprise PL/I, Facom OS IV PL/I, Farmingdale, Form SC26-4308, Framingham, Fujitsu Ltd, GC33-0009, Honeywell Another extracted example is PL/I → All, Almost, Apple, Architecture, AS/400, BSL, Control Data Corporation STAR-100, Cornell University, CP-6, General Motors Research Laboratories, HAL/S, Honeywell, IBM, IBM Db2, IBM Research, IBM RS64, IMPI, Inc, Intermetrics, It. Use these groups to spot repeated connection types before inspecting the individual relationships.

PL/I

Top relations

related to Reference manuals · 61
PL/I → AA-H952E-TM, AG94-02, Burroughs Corporation, C28-6571, CDC, CDC Cyber, Conversational Programming Language User's, DEC-10-LCPUA-A-D, December, Detroit, Digital Equipment Corporation, Ed, Enterprise PL/I, Facom OS IV PL/I, Farmingdale, Form SC26-4308, Framingham, Fujitsu Ltd, GC33-0009, Honeywell
related to PL/I dialects · 56
PL/I → All, Almost, Apple, Architecture, AS/400, BSL, Control Data Corporation STAR-100, Cornell University, CP-6, General Motors Research Laboratories, HAL/S, Honeywell, IBM, IBM Db2, IBM Research, IBM RS64, IMPI, Inc, Intermetrics, It
related to Textbooks · 48
PL/I → Abrahams, Addison-wesley, Algorithms, An Introduction, Anderson, Ann Arbor, Barnes, Books, Computing Laboratory, Courant Mathematics, Demand, Engineering, Germany, Groner, Hughes, Introduction, ISBN, Joan, Lawson, Mainframe
related to history · 36
PL/I → ALGOL, April, Autocoders, Business, COBOL, COMTRAN, Control, Formal Methods, Fortran, GEORGE, Given, GUIDE, Hursley, IBM, IBM Laboratory Vienna, IBM UK Laboratory, IBM's, IBMers, In, In October
related to Standardization · 35
PL/I → ANSI, ANSI X3J1, April, Bell Laboratories, Burroughs, CDC, Composite Language Development Committee, Data General, Digital Equipment Corporation, Eastman Kodak, ECMA TC/10, ECMA TC10, Europe, Further, General Motors, GY33-6003, Hoare, Honeywell, IBM, ICL
related to Other mainframe and minicomputer compilers · 34
PL/I → ANSI, ANSI Programming Language PL/I, ANSI X3, ANSI-G, AOS, AOS/VS, AOS/VS II, B6700, B7700, Burroughs Corporation, CDC, CIMS PL/I, Cyber, Data General, Eclipse, Eclipse MV, From, Fujitsu, IBM PL/I, IBM Series/1 PL/I
related to IBM PL/I F and D compilers · 28
PL/I → Areas, Aspects, Based Variables, Clarke, DO-loops, Each, Fortran, Hursley, Hursley Laboratories, IBM, In, John Nash's, LOCATE-mode I/O, Nobby, Offsets, OS/360, OS/360 Operating System, PL/I RECORD I/O, Pointers, Release
related to DEC PL/I · 25
PL/I → Alpha, ANSI X3, Dave Cutler, DEC PL/I, Digital, Digital Equipment Corporation's VAX-11, During, IBM's, It, Kednos, Kednos PL/I, Multics, October, Perhaps, PL/I General Purpose Subset, Robert Freiburghouse, The, Tru64, UniPrise Systems, VAX
related to PL/I compilers for personal computers and Unix · 24
PL/I → AIX, CP/M, CP/M-86, Digital Research, GCC, IBM, IBM PC, IBM PC DOS, In, Iron Spring PL/I, It, Liant, Linux, Micro Focus, MS-DOS, Open PL/I, OS/2, PL/I-80, PL/I-86, PL/M
related to External links · 21
PL/I → Adventure, AIX, David Sligar, EclipsePower, GitHub, IBM PL/I, IBM PL/I Compilers, Linux, Migration SolutionOS PL/I V2R3, MVS, Open-source Windows NT PL/I, OS, OS/2Micro Focus' Mainframe PL/I, PL/1, PLI-2000, Softpanorama PL/1, SourceForgePL/I, The PL/I LanguagePL1GCC, Version, VM

Important terminology

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

pl language compiler ibm programming system data used fortran compilers written cobol program use standard os operating features storage new

PL/I relationships Subject–Predicate–Object triples

TTTA extracted 558 structured relationships around PL/I. Examples in this analysis include PL/I → Designed by → IBM, SHARE Language Development Committee, ISO and PL/I → First appeared → 1964; 62 years ago (1964). The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
PL/IDesigned byIBM, SHARE Language Development Committee, ISO1.00infobox
PL/IFirst appeared1964; 62 years ago (1964)1.00infobox
PL/IParadigmProcedural, imperative, structured1.00infobox
PL/IWebsitewww.ibm.com/products/pli-compiler-zos1.00infobox
PL/Iis aANSI G implementation for the VOS operating system.IBM Series/1 PL/I is an extended subset of ANSI Programming Language PL/I0.90text
multi-taskinginstance ofFeatures0.80text
the PL/I preprocessor are not in the Standard but are supported in the PL/I F compilerinstance ofFeatures0.80text
some other implementations are discussed in the Language evolution sectioninstance ofFeatures0.80text
cascading diagnosticsinstance ofit succeeded in eliminating the annoyances of PL/I F0.80text
IBM's PL/I F compilerinstance ofPrograms that ran without errors under the SP/k compilers produced the same results under other contemporary PL/I compilers0.80text
IBM's checkout compiler or Cornell University's PL/C compiler.Other examples are PL0 by Pinstance ofPrograms that ran without errors under the SP/k compilers produced the same results under other contemporary PL/I compilers0.80text
subtraction of two infinite values.The ANYCONDITION condition is provided to intercept conditions for which no specific ON-unit has been provided in the current procedure.The STORAGE condition is raised when an ALLOCATE statement is unable to obtain sufficient storage.Other mainframeinstance ofas well as illegal arithmetic operations0.80text

Related concept clusters Concept neighborhoods

The concept neighborhoods around PL/I bring nearby vocabulary together. In this analysis, examples include Language, Ibm and Compiler. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • PL/I
    • Language
    • Ibm
    • Compiler
    • Programming
    • System
    • Os
    • Used
    • Compilers
    • Subset
    • Written
    • Operating
    • Developed
  • pl/i
    • Language
    • Ibm
    • Compiler
    • Programming
    • System
    • Os
    • Used
    • Compilers
    • Subset
    • Written
    • Operating
    • Developed
  • programming language
    • Pl
    • Ibm
    • Programming
    • System
    • Written
    • Features
    • Subset
    • Cobol
    • Compiler
    • Os
    • Fortran
    • Compilers
  • ibm
    • Pl
    • Language
    • System
    • Compilers
    • Compiler
    • Os
    • Programming
    • Written
    • Early
    • First
    • One
    • Subset
  • data processing
    • Type
    • Structure
    • Types
    • Storage
    • Used
    • Systems
    • Statement
    • Pl
    • Functions
    • Language
    • First
    • Statements
  • system programming
    • System
    • Used
    • Written
    • Systems
    • First
    • Features
    • Fortran
    • Compilers
    • Machine
    • Data
    • Subset
    • Time
  • structured programming
    • System
    • Systems
    • First
    • Features
    • Fortran
    • Compilers
    • Machine
    • Data
    • Subset
    • Time
    • New
    • Standard
  • linked data structure
    • Type
    • Structure
    • Types
    • Storage
    • Using
    • Used
    • Systems
    • Statement
    • Pl
    • Functions
    • Variables
    • Language

Connections between topic areas Semantic bridges

For PL/I, one of the stronger structural bridges in this analysis connects PL/I with Implementations. Bridges highlight paths between different parts of the map and can reveal research angles that are easy to miss in a flat list.

Min side: 3
PL/I — Implementations · splits 161 ⟂ 72
PL/I — PL/I dialects · splits 198 ⟂ 35
PL/I — Overview · splits 207 ⟂ 26
PL/I — Early history · splits 211 ⟂ 22
PL/I — Standardization · splits 214 ⟂ 19
PL/I — Usage · splits 217 ⟂ 16
PL/I — Goals and principles · splits 219 ⟂ 14
PL/I — Criticisms · splits 224 ⟂ 9
PL/I — Language summary · splits 228 ⟂ 5
PL/I — Special topics in PL/I · splits 229 ⟂ 4
PL/I — Evolution of the PL/I language · splits 230 ⟂ 3
PL/I — Standards · splits 230 ⟂ 3

Map overview Semantic statistics

PL/I

Nodes233
Edges232
Triples558
Avg. degree1.99
Density0.008584
Components1

Source & methodology

TTTA analyzes the structure around PL/I to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as Standards, History, Technology & Science, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.

Source: Wikipedia — PL/I · EN edition · Analysis: TopicsToTalkAbout

For writers, content strategists, SEOs, marketers and creators — from quick topic research to advanced semantic analysis.