PDP-7
E183314
The PDP-7 was a 1960s DEC minicomputer whose relatively low cost and flexible design made it popular in research labs and notable as the machine on which the first version of Unix was developed.
All labels observed (3)
| Label | Occurrences |
|---|---|
| DEC PDP-7 | 2 |
| PDP-7 canonical | 2 |
| Programmed Data Processor-7 | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1612013 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: PDP-7 Context triple: [Unix, originalPlatform, PDP-7]
-
A.
Honeywell 316 minicomputer
The Honeywell 316 minicomputer was a small, 16-bit general-purpose computer from the late 1960s widely used in early networking and control applications.
-
B.
Honeywell DDP-516 minicomputer
The Honeywell DDP-516 minicomputer was a rugged, 16-bit computer from the 1960s widely used in real-time and military applications, notably serving as the hardware platform for the original ARPANET Interface Message Processors.
-
C.
COSMAC ELF computer
The COSMAC ELF computer is a simple, low-cost, build-it-yourself microcomputer from the late 1970s that became popular among hobbyists for learning and experimenting with early personal computing.
-
D.
IBM 700/7000 series
The IBM 700/7000 series was a family of early large-scale mainframe computers from the 1950s and early 1960s that played a key role in scientific, engineering, and business computing before the advent of more standardized systems.
-
E.
Intel 8008
The Intel 8008 is an early 8-bit microprocessor introduced in 1972 that helped pioneer the development of general-purpose microcomputers.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: PDP-7 Target entity description: The PDP-7 was a 1960s DEC minicomputer whose relatively low cost and flexible design made it popular in research labs and notable as the machine on which the first version of Unix was developed.
-
A.
Honeywell 316 minicomputer
The Honeywell 316 minicomputer was a small, 16-bit general-purpose computer from the late 1960s widely used in early networking and control applications.
-
B.
Honeywell DDP-516 minicomputer
The Honeywell DDP-516 minicomputer was a rugged, 16-bit computer from the 1960s widely used in real-time and military applications, notably serving as the hardware platform for the original ARPANET Interface Message Processors.
-
C.
COSMAC ELF computer
The COSMAC ELF computer is a simple, low-cost, build-it-yourself microcomputer from the late 1970s that became popular among hobbyists for learning and experimenting with early personal computing.
-
D.
IBM 700/7000 series
The IBM 700/7000 series was a family of early large-scale mainframe computers from the 1950s and early 1960s that played a key role in scientific, engineering, and business computing before the advent of more standardized systems.
-
E.
Intel 8008
The Intel 8008 is an early 8-bit microprocessor introduced in 1972 that helped pioneer the development of general-purpose microcomputers.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
Digital Equipment Corporation computer
ⓘ
minicomputer ⓘ |
| addressSpace | up to 8K words (basic configuration) ⓘ |
| alsoKnownAs |
PDP-7
ⓘ
surface form:
Programmed Data Processor-7
|
| architecture | 18-bit DEC architecture ⓘ |
| busType | DEC proprietary bus ⓘ |
| category | general-purpose computer ⓘ |
| companyHeadquarters | Maynard, Massachusetts NERFINISHED ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| cpuType | discrete transistor logic ⓘ |
| dataPathWidth | 18 bits ⓘ |
| decade | 1960s ⓘ |
| designCharacteristic | flexible design ⓘ |
| designedFor |
laboratory automation
ⓘ
research computing ⓘ scientific computing ⓘ |
| expandableTo | larger core memory configurations ⓘ |
| family | PDP series ⓘ |
| formFactor | rack-mounted system ⓘ |
| inputOutput |
display devices (optional)
ⓘ
paper tape punch ⓘ paper tape reader ⓘ teleprinter ⓘ |
| instructionSet | PDP-7 instruction set ⓘ |
| introductionYear | 1964 ⓘ |
| manufacturer | Digital Equipment Corporation ⓘ |
| marketPosition | low-cost minicomputer ⓘ |
| memoryType | magnetic core memory ⓘ |
| notableFor | first computer used to develop Unix ⓘ |
| numericRepresentation | two's complement ⓘ |
| operatingSystem |
DECsys
ⓘ
FOCAL ⓘ Unix ⓘ
surface form:
Unix (early version)
|
| popularIn |
industrial labs
ⓘ
research laboratories ⓘ universities ⓘ |
| powerSupply | mains-powered ⓘ |
| predecessor | PDP-4 ⓘ |
| relatedTo |
PDP-1
ⓘ
PDP-5 ⓘ PDP-8 ⓘ |
| successor | PDP-9 ⓘ |
| supports |
assembly language programming
ⓘ
time-sharing (with appropriate software) ⓘ |
| technology | transistorized computer ⓘ |
| usedAt |
Bell Telephone Laboratories
ⓘ
surface form:
Bell Labs
|
| usedBy |
Dennis Ritchie
ⓘ
Ken Thompson ⓘ |
| usedFor | early Unix development ⓘ |
| wordLength | 18-bit ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: PDP-7 Description of subject: The PDP-7 was a 1960s DEC minicomputer whose relatively low cost and flexible design made it popular in research labs and notable as the machine on which the first version of Unix was developed.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
DEC PDP-7
this entity surface form:
DEC PDP-7
this entity surface form:
Programmed Data Processor-7