Johnniac computer
E874574
The Johnniac computer was an early vacuum-tube, stored-program computer built at the RAND Corporation in the 1950s, notable for its long operational life and use in pioneering artificial intelligence research.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Johnniac computer canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10602403 — 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: Johnniac computer Context triple: [Logic Theorist, hardwareUsed, Johnniac computer]
-
A.
UNIVAC I
UNIVAC I was one of the earliest commercial electronic computers, pioneering large-scale data processing for government and business in the early 1950s.
-
B.
IBM 704
The IBM 704 was a pioneering 1950s vacuum-tube mainframe computer notable for its support of floating-point arithmetic and its influential role in early high-level programming languages and computer architecture.
-
C.
IBM 650
The IBM 650 was an early, widely used mid-1950s drum-based decimal computer that helped popularize electronic data processing in business and education.
-
D.
ORDVAC
ORDVAC was an early stored-program electronic computer built for the U.S. Army that helped pioneer modern computer architecture and numerical computation.
-
E.
Mark-8 computer
The Mark-8 computer was an early 1970s do-it-yourself microcomputer kit for hobbyists, notable as one of the first published designs for a home computer.
- 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: Johnniac computer Target entity description: The Johnniac computer was an early vacuum-tube, stored-program computer built at the RAND Corporation in the 1950s, notable for its long operational life and use in pioneering artificial intelligence research.
-
A.
UNIVAC I
UNIVAC I was one of the earliest commercial electronic computers, pioneering large-scale data processing for government and business in the early 1950s.
-
B.
IBM 704
The IBM 704 was a pioneering 1950s vacuum-tube mainframe computer notable for its support of floating-point arithmetic and its influential role in early high-level programming languages and computer architecture.
-
C.
IBM 650
The IBM 650 was an early, widely used mid-1950s drum-based decimal computer that helped popularize electronic data processing in business and education.
-
D.
ORDVAC
ORDVAC was an early stored-program electronic computer built for the U.S. Army that helped pioneer modern computer architecture and numerical computation.
-
E.
Mark-8 computer
The Mark-8 computer was an early 1970s do-it-yourself microcomputer kit for hobbyists, notable as one of the first published designs for a home computer.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
early computer
ⓘ
scientific computer ⓘ stored-program computer ⓘ vacuum-tube computer ⓘ |
| architectureType | binary ⓘ |
| basedOn | IAS architecture ⓘ |
| clockFrequency | approximately 1 MHz (order of magnitude) ⓘ |
| countryOfOrigin |
United States
ⓘ
linked to:
United States of America
|
| developer | RAND Corporation ⓘ |
| fieldOfUse |
artificial intelligence research
ⓘ
computer science research ⓘ operations research at RAND ⓘ |
| fundedBy |
U.S. Air Force (partially)
ⓘ
linked to:
United States Air Force
|
| hasComponent |
console with switches and lights
ⓘ
magnetic drum (secondary storage) ⓘ |
| hostedProject |
Logic Theorist
ⓘ
linked to:
the Logic Theorist program
early AI theorem proving programs ⓘ |
| influenced | later RAND computing projects ⓘ |
| influencedBy | EDVAC design concepts ⓘ |
| inputDevice |
paper tape
ⓘ
punched cards ⓘ |
| inspiredBy | IAS machine ⓘ |
| instructionSetType | single-address architecture ⓘ |
| locationBuilt |
Santa Monica, California
ⓘ
linked to:
Santa Monica, California, United States
|
| memoryType |
Williams tube electrostatic memory
ⓘ
magnetic-core memory (later upgrade) ⓘ |
| namedAfter | John von Neumann ⓘ |
| notableFor |
long operational life
ⓘ
use in early artificial intelligence research ⓘ use in numerical analysis ⓘ use in systems research ⓘ |
| numeralSystem | two's complement binary ⓘ |
| operatedBy | RAND Corporation ⓘ |
| operationalLifetime | approximately 13 years ⓘ |
| outputDevice |
line printer
ⓘ
paper tape punch ⓘ |
| primaryMemorySize |
256 words (initially)
ⓘ
4096 words (after upgrades) ⓘ |
| programStorage | in-memory stored program ⓘ |
| technology |
diodes
ⓘ
vacuum tubes ⓘ |
| usedFor |
artificial intelligence experiments
ⓘ
mathematical simulations ⓘ operations research ⓘ symbolic computation ⓘ |
| wordLength | 40-bit ⓘ |
| yearConstructionStarted | 1950 ⓘ |
| yearDecommissioned | 1966 ⓘ |
| yearFirstOperational | 1953 ⓘ |
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: Johnniac computer Description of subject: The Johnniac computer was an early vacuum-tube, stored-program computer built at the RAND Corporation in the 1950s, notable for its long operational life and use in pioneering artificial intelligence research.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
the Logic Theorist program