Research any topic before you write.

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

3B series computers

The 3B series computers are a line of minicomputers made between the late 1970s and 1993 by AT&T Computer Systems' Western Electric subsidiary, for use with the company's UNIX operating system. The line primarily consists of the models 3B20, 3B5, 3B15, 3B2, and 3B4000. The series is notable for controlling a series of electronic switching systems for…

History, Measurement, Companies & Products

Use the mouse wheel or two fingers (on touchscreens) to zoom in and out of the map.

Research this topic

Explore the main themes, entities and connections around 3B series computers. Start with the topic map, then use the sections below for research and deeper semantic analysis.

Explore this topic

Start with a few of the strongest sections from the source topic. These are research directions, not a list of keywords you must use.

Topics to explore

Browse the full topic structure. Each item opens a new analysis centered on that subject.

Overview

History

3B high-availability processors

Minicomputers

Microcomputers

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.

Map overview Semantic statistics

3B series computers

Nodes79
Edges78
Triples5
Avg. degree1.97
Density0.025316
Components1

How this topic connects Entity context

See the strongest relationship patterns around the current topic before diving into the raw triples.

Important terminology Word statistics

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

Important terminology

system 3b2 unix 3b20d use computer 3b20s 3b 3b5 systems 3b4000 processor running disk computers models 3b15 32-bit two high

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
telecommunications after duplex failure of redundant essential disksinstance ofthe ability to continue essential software processing0.80text
the 2STP signal transfer pointinstance ofIt is still in use as of 2023 as a component of Nokia products0.80text
the 4ESSinstance ofIt is still in use as of 2023 as a component of Nokia products0.80text
5ESS switchesinstance ofIt is still in use as of 2023 as a component of Nokia products0.80text
which Nokia inherited from ATinstance ofIt is still in use as of 2023 as a component of Nokia products0.80text

Related concept clusters Concept neighborhoods

These clusters group vocabulary that occurs around closely connected concepts in the source material.

    Connections between topic areas Semantic bridges

    Bridges can reveal useful research angles that are easy to miss in a flat list of related terms.

    Min side: 3
    For writers, content strategists, SEOs, marketers and creators — from quick topic research to advanced semantic analysis.