Research any topic before you write.

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

Parallel port: History, Applications & Standards

In computing, a parallel port is a type of interface found on early computers (personal and otherwise) for connecting peripherals. The name refers to the way the data is sent; parallel ports send multiple bits of data at once (parallel communication), as opposed to serial communication, in which bits are sent one at a time. To do this, parallel ports…

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%

Parallel port topic overview

The analysis highlights History, Applications and Standards as prominent areas in the source structure around Parallel port.

Related topics
116
Source areas
7
Connected nodes
123
Extracted relationships
201
Concept neighborhoods
34
Bridge connections
123

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.

History · 38 topics
Historical uses · 36 topics
Overview · 23 topics
IBM PC implementation · 9 topics
Notable consumer products · 5 topics
Current use · 4 topics
Pinouts · 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.

Bitrate
PP: 150 kB/s, EPP: 2 MB/s ECP: 2.5 MB/s
Cable
Usually up to 25 wires including ground; optionally shielded
Connector
DB-25, DB25F, "Centronics" 36-pin Amphenol, DC-37, others
Data signal
Parallel
Designed
1970–1981
Designer
Centronics, IBM

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

History

Historical uses

Notable consumer products

Current use

IBM PC implementation

Pinouts

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 Parallel port connects Entity context

The extracted context around Parallel port shows recurring relationship patterns in the source. For example, Parallel port → AUTOEXEC, BAT, BIOS, CONFIG, CP/M, DEC, DOS, DOS-based, DR-DOS, For, In DOS, ITS, Line Print Terminal, Line Printer, Local Print Terminal, LPT, LPT1, LPT2, LPT3, LPT4 Another extracted example is Parallel port → All, Bi-Tronics, BUSY, Centronics, ECP, EPP, IBM, IBM's, IEEE, In, ISA, MB/s, Mbps, The, The Enhanced Parallel Port, The Extended Capability Port, This, Two, Zenith Electronics. Use these groups to spot repeated connection types before inspecting the individual relationships.

Parallel port

Top relations

related to Access · 29
Parallel port → AUTOEXEC, BAT, BIOS, CONFIG, CP/M, DEC, DOS, DOS-based, DR-DOS, For, In DOS, ITS, Line Print Terminal, Line Printer, Local Print Terminal, LPT, LPT1, LPT2, LPT3, LPT4
related to EPP and ECP · 19
Parallel port → All, Bi-Tronics, BUSY, Centronics, ECP, EPP, IBM, IBM's, IEEE, In, ISA, MB/s, Mbps, The, The Enhanced Parallel Port, The Extended Capability Port, This, Two, Zenith Electronics
related to Pinouts · 17
Parallel port → ACK, Busy, Enhanced Parallel Ports, EPPs, Error, Initialize, It, Its, KB/s, Linefeed, MB/s, Newer, Paper Out, Select, Select In, Strobe, The
related to Centronics · 15
Parallel port → Amphenol, An Wang, ASCII, Centronics, In, On, Prentice Robinson, Robert Howard, The, This, To, Wang, Wang Laboratories, When, While
related to External links · 15
Parallel port → API, Archived, BeyondLogic, Developing Parallel Device Drivers, ECP, EPP, HOWTOThe Linux, I/O, Parallel Port Subsystem Archived, PC's, Python, Roadmap, Wayback Machinelibieee1284, Wayback MachineParallel Port, Windows NT/2000/XP Parallel
related to Dataproducts · 13
Parallel port → Dataproducts, DB50, DC-37, DD-50, However, It, M-50, Most, PC, Printers, The Dataproducts, Winchester, Zip
related to Port addresses · 13
Parallel port → Assigning, BDA, BIOS, BIOS Data Area, For, Hercules, If, LPT1 DOS, MDA, The, The IRQ, Therefore, Traditionally IBM PC
related to Program interface · 13
Parallel port → Access, DOS, FreeBSD, In, Linux, NetBSD, On Linux, Solaris, The, This, Unix, Windows, Windows NT
related to Historical uses · 11
Parallel port → Adapters, Before, CD, EPROM, MP3, One, Other, SCSI, Some, USB, Zip
related to Current use · 10
Parallel port → For, Many, PCI, PCI-express, Smaller, There, USB, USB-only, USB-to-EPP, USB-to-parallel

Important terminology

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

Important terminology

port parallel printer data interface ibm ports used also devices centronics host printers could pins computers systems connector pc using

Parallel port relationships Subject–Predicate–Object triples

TTTA extracted 201 structured relationships around Parallel port. Examples in this analysis include Parallel port → Bitrate → PP: 150 kB/s, EPP: 2 MB/s ECP: 2.5 MB/s and Parallel port → Cable → Usually up to 25 wires including ground; optionally shielded. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
Parallel portBitratePP: 150 kB/s, EPP: 2 MB/s ECP: 2.5 MB/s1.00infobox
Parallel portCableUsually up to 25 wires including ground; optionally shielded1.00infobox
Parallel portConnectorDB-25, DB25F, "Centronics" 36-pin Amphenol, DC-37, others1.00infobox
Parallel portData signalParallel1.00infobox
Parallel portDesigned1970–19811.00infobox
Parallel portDesignerCentronics, IBM1.00infobox
Parallel portEarthDedicated pins1.00infobox
Parallel portExternalYes1.00infobox
Parallel portHot pluggableUsually not1.00infobox
Parallel portLength2.3 cm (0.91 in)1.00infobox
Parallel portManufacturerCentronics, Dataproducts, Intel, IBM, Compaq, Nortel, etc1.00infobox
Parallel portMax. devices2, unless devices provide passthrough1.00infobox
Parallel portMax. voltage5 volts DC1.00infobox
Parallel portPins8 data, 4 output control, 5 input control, 8 ground1.00infobox
Parallel portProtocolApplication dependent1.00infobox
Parallel portSignal0 to +5.0 volt DC1.00infobox
Parallel portTypePoint-to-point1.00infobox
Parallel portWidthVariable1.00infobox
Parallel portis atype of interface found on early computers0.90text

Related concept clusters Concept neighborhoods

The concept neighborhoods around Parallel port bring nearby vocabulary together. In this analysis, examples include Port, Ports and Printer. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • Parallel port
    • Port
    • Ports
    • Printer
    • Interface
    • Computers
    • Devices
    • Bios
    • Ibm
    • Pc
    • Data
    • Epp
    • Also
  • parallel port
    • Port
    • Ports
    • Printer
    • Interface
    • Computers
    • Devices
    • Bios
    • Ibm
    • Epp
    • Ecp
    • Pc
    • Device
  • interface
    • Computers
    • Ibm
    • Parallel
    • Port
    • Printers
    • Many
    • Serial
    • Printer
    • Access
    • Pc
    • Used
    • Connector
  • computers
    • Interface
    • Parallel
    • Epp
    • Many
    • Port
    • Serial
    • Ecp
    • Using
    • Connector
    • Centronics
    • Ibm
    • Printer
  • parallel communication
    • Port
    • Ports
    • Printer
    • Interface
    • Computers
    • Devices
    • Ibm
    • Pc
    • Data
    • Epp
    • Also
    • Access
  • port
    • Printer
    • Ports
    • Devices
    • Bios
    • Epp
    • Ecp
    • Device
    • Serial
    • Also
    • Access
    • Use
    • Using
  • serial ports
    • Printer
    • Port
    • Device
    • Using
    • Many
    • Lines
    • Systems
    • Serial
    • Bios
    • Standard
    • Windows
    • Pins
  • centronics port
    • Connector
    • Ibm
    • Pc
    • Printer
    • Ports
    • Devices
    • Bios
    • Epp
    • Ecp
    • Computers
    • Device
    • Used

Connections between topic areas Semantic bridges

For Parallel port, one of the stronger structural bridges in this analysis connects Parallel port with History. 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
Parallel port — History · splits 85 ⟂ 39
Parallel port — Historical uses · splits 87 ⟂ 37
Parallel port — Overview · splits 100 ⟂ 24
Parallel port — IBM PC implementation · splits 114 ⟂ 10
Parallel port — Notable consumer products · splits 118 ⟂ 6
Parallel port — Current use · splits 119 ⟂ 5

Map overview Semantic statistics

Parallel port

Nodes124
Edges123
Triples201
Avg. degree1.98
Density0.016129
Components1

Source & methodology

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

Source: Wikipedia — Parallel port · EN edition · Analysis: TopicsToTalkAbout

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