Harvard Mark IV computer
E756212
The Harvard Mark IV computer was an early fully electronic, stored-program computer built at Harvard University in the late 1940s–early 1950s as part of the Mark series of pioneering computing machines.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Harvard Mark IV | 3 |
| Harvard Mark IV computer canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8672948 — 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: Harvard Mark IV computer Context triple: [Howard Aiken, designed, Harvard Mark IV computer]
-
A.
Harvard Mark III computer
The Harvard Mark III computer was an early electromechanical/digital hybrid computer developed in the late 1940s that advanced stored-program concepts and military computation at Harvard University.
-
B.
Harvard Mark I computer
The Harvard Mark I computer was an early electromechanical, general-purpose computer built during World War II that pioneered the separation of data and instruction storage later known as the Harvard architecture.
-
C.
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.
-
D.
EDVAC
EDVAC was one of the earliest electronic stored-program computers, pioneering the use of binary arithmetic and influencing the development of modern computer architecture.
-
E.
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.
- 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: Harvard Mark IV computer Target entity description: The Harvard Mark IV computer was an early fully electronic, stored-program computer built at Harvard University in the late 1940s–early 1950s as part of the Mark series of pioneering computing machines.
-
A.
Harvard Mark III computer
The Harvard Mark III computer was an early electromechanical/digital hybrid computer developed in the late 1940s that advanced stored-program concepts and military computation at Harvard University.
-
B.
Harvard Mark I computer
The Harvard Mark I computer was an early electromechanical, general-purpose computer built during World War II that pioneered the separation of data and instruction storage later known as the Harvard architecture.
-
C.
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.
-
D.
EDVAC
EDVAC was one of the earliest electronic stored-program computers, pioneering the use of binary arithmetic and influencing the development of modern computer architecture.
-
E.
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.
- F. None of above. chosen
Statements (31)
| Predicate | Object |
|---|---|
| instanceOf |
Harvard Mark series computer
ⓘ
electronic computer ⓘ stored-program computer ⓘ |
| architecture | stored-program architecture ⓘ |
| completedIn | early 1950s ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| developer |
Harvard University
ⓘ
Howard H. Aiken ⓘ
linked to:
Howard Aiken
|
| distinctionFromPredecessors |
fully electronic design
ⓘ
stored-program capability ⓘ |
| era | first-generation computer ⓘ |
| field | computer science history ⓘ |
| follows |
Harvard Mark III
ⓘ
linked to:
Harvard Mark III computer
|
| inception | late 1940s ⓘ |
| locationBuilt |
Cambridge, Massachusetts
ⓘ
Harvard University ⓘ |
| logicType | electronic ⓘ |
| memoryType |
magnetic core memory
ⓘ
magnetic drum memory ⓘ |
| notableFor |
advancing the Harvard Mark series from electromechanical to fully electronic design
ⓘ
being one of the earliest stored-program computers in the United States ⓘ |
| partOfSeries | Harvard Mark series ⓘ |
| powerSource | electrical ⓘ |
| precedes | Harvard Mark V ⓘ |
| primaryUse |
military computing
ⓘ
scientific computing ⓘ |
| programStorage | stored in memory ⓘ |
| technology | vacuum tube ⓘ |
| usedBy |
Harvard University
ⓘ
United States Navy ⓘ |
| wordLength | 16-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: Harvard Mark IV computer Description of subject: The Harvard Mark IV computer was an early fully electronic, stored-program computer built at Harvard University in the late 1940s–early 1950s as part of the Mark series of pioneering computing machines.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Harvard Mark IV computer
linked to: Harvard Mark IV computer
subject linked to:
Harvard Mark III computer
linked to: Harvard Mark IV computer