Research any topic before you write.

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

VT220: Legacy, Companies & Products

The VT200 series is a family of computer terminals introduced by Digital Equipment Corporation (DEC) in November 1983. The VT220 was the basic version, a text-only version with multi-lingual capabilities. The VT240 added monochrome ReGIS vector graphics support to the base model, while the VT241 did the same in color. The 200 series replaced the…

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%

VT220 topic overview

The analysis highlights Legacy, Companies and Products as prominent areas in the source structure around VT220.

Related topics
36
Source areas
5
Connected nodes
41
Extracted relationships
56
Concept neighborhoods
20
Bridge connections
41

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.

Hardware · 17 topics
Overview · 8 topics
Software · 8 topics
Escape key controversy · 2 topics
Legacy · 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.

Connectivity
RS-232 serial 20 mA current loop DE-9 serial printer port
CPU
Intel 8051 @ 11.0592 MHz
Display
12 in (30 cm) CRT 80x24 characters
Input
LK201 keyboard
Introductory price
US$1,295 (equivalent to $4,200 in 2025)
Manufacturer
DEC

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

Hardware

Software

Escape key controversy

Legacy

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 VT220 connects Entity context

The extracted context around VT220 shows recurring relationship patterns in the source. For example, VT220 → ANSI, Eventually, IBM, IBM Model, IBM PC, IBM's, In, ISO, Key, LK201, Model, Through, VT220's Another extracted example is VT220 → ANSI, ASCII, DEC Special Graphics, Display Controls, Glyphs, ROM, The, The VT220, This, Using, VT100. Use these groups to spot repeated connection types before inspecting the individual relationships.

VT220

Top relations

related to Legacy · 13
VT220 → ANSI, Eventually, IBM, IBM Model, IBM PC, IBM's, In, ISO, Key, LK201, Model, Through, VT220's
related to Software · 11
VT220 → ANSI, ASCII, DEC Special Graphics, Display Controls, Glyphs, ROM, The, The VT220, This, Using, VT100
related to Hardware · 10
VT220 → CRT, CRTs, Intel, The, The VT100s, The VT200s, The VT220, This, VT100, VT50s
related to Escape key controversy · 5
VT220 → Escape, For, Prior, TECO, The VT220
related to External links · 4
VT220 → Coded Character Sets, Control Functions, Kermit, VT320 Function Key MappingVT220
see also · 2
VT220 → ANSI, VT100
Connectivity · 1
VT220 → RS-232 serial 20 mA current loop DE-9 serial printer port
CPU · 1
VT220 → Intel 8051 @ 11.0592 MHz
Display · 1
VT220 → 12 in (30 cm) CRT 80x24 characters
Input · 1
VT220 → LK201 keyboard

Important terminology

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

Important terminology

dec character series terminal characters vt100 keyboard sets could used set terminals much vt200 key rom monitor using version vt240

VT220 relationships Subject–Predicate–Object triples

TTTA extracted 56 structured relationships around VT220. Examples in this analysis include VT220 → Connectivity → RS-232 serial 20 mA current loop DE-9 serial printer port and VT220 → CPU → Intel 8051 @ 11.0592 MHz. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
VT220ConnectivityRS-232 serial 20 mA current loop DE-9 serial printer port1.00infobox
VT220CPUIntel 8051 @ 11.0592 MHz1.00infobox
VT220Display12 in (30 cm) CRT 80x24 characters1.00infobox
VT220InputLK201 keyboard1.00infobox
VT220Introductory priceUS$1,295 (equivalent to $4,200 in 2025)1.00infobox
VT220ManufacturerDEC1.00infobox
VT220Memory16 KB RAM 24 KB ROM 256 byte NVRAM1.00infobox
VT220PredecessorVT1001.00infobox
VT220ReleasedNovember 1983 (1983-11)1.00infobox
VT220SuccessorVT3201.00infobox
VT220TypeComputer terminal1.00infobox
VT220related to Escape key controversyPrior0.60section

Related concept clusters Concept neighborhoods

The concept neighborhoods around VT220 bring nearby vocabulary together. In this analysis, examples include Key, Keyboard and Vt100. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • VT220
    • Key
    • Keyboard
    • Vt100
    • Lk201
    • Serial
    • Available
    • Terminal
    • Computer
    • Market
    • Time
    • Ansi
    • Later
  • vt220
    • Key
    • Keyboard
    • Vt100
    • Lk201
    • Serial
    • Available
    • Terminal
    • Computer
    • Market
    • Time
    • Ansi
    • Later
  • dec t-11
    • Terminals
    • Series
    • Serial
    • Shipped
    • Later
    • Used
    • Characters
    • Terminal
    • Lk201
    • Market
    • Time
    • Vt200
  • control characters
    • Included
    • Set
    • Computer
    • Terminal
    • Available
    • Rom
    • Dec
    • Lk201
    • Serial
    • Shipped
    • Graphics
    • One
  • computer terminals
    • Dec
    • Serial
    • Terminals
    • Later
    • Rom
    • Series
    • Lk201
    • Vt200
    • Characters
    • Smaller
    • Vt200s
    • Key
  • vt300 series
    • Vt200
    • Vt100
    • Computer
    • Dec
    • Ansi
    • Smaller
    • Much
    • Terminals
    • Keyboard
    • Lk201
    • Market
    • Serial
  • character sets
    • Sets
    • Set
    • Included
    • Rom
    • Vt200s
    • Using
    • Could
    • Terminal
    • Characters
    • Terminals
    • Vt100
    • Color
  • national replacement character set
    • Sets
    • Set
    • Vt200s
    • Included
    • Rom
    • Using
    • Could
    • Characters
    • Terminal
    • Color
    • Computer
    • Available

Connections between topic areas Semantic bridges

For VT220, one of the stronger structural bridges in this analysis connects VT220 with Hardware. 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
VT220 — Hardware · splits 24 ⟂ 18
VT220 — Overview · splits 33 ⟂ 9
VT220 — Software · splits 33 ⟂ 9
VT220 — Escape key controversy · splits 39 ⟂ 3

Map overview Semantic statistics

VT220

Nodes42
Edges41
Triples56
Avg. degree1.95
Density0.047619
Components1

Source & methodology

TTTA analyzes the structure around VT220 to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as Legacy, Companies & Products, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.

Source: Wikipedia — VT220 · EN edition · Analysis: TopicsToTalkAbout

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