Harvard Mark I computer
E412984
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.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Harvard Mark I computer canonical | 2 |
| IBM Automatic Sequence Controlled Calculator | 2 |
| Harvard Mark I | 1 |
| Harvard Mark II computer | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4093882 — 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 I computer Context triple: [Harvard architecture, historicallyAssociatedWith, Harvard Mark I 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.
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.
-
C.
ENIAC project
The ENIAC project was an early U.S. military-funded effort during World War II to develop one of the first general-purpose electronic digital computers, laying foundational concepts for modern computing.
-
D.
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.
-
E.
Colossus computers
Colossus computers were pioneering British electronic computing machines built during World War II to help decrypt high-level German communications at Bletchley Park.
- 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 I computer Target entity description: 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.
-
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.
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.
-
C.
ENIAC project
The ENIAC project was an early U.S. military-funded effort during World War II to develop one of the first general-purpose electronic digital computers, laying foundational concepts for modern computing.
-
D.
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.
-
E.
Colossus computers
Colossus computers were pioneering British electronic computing machines built during World War II to help decrypt high-level German communications at Bletchley Park.
- F. None of above. chosen
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf |
early computer
ⓘ
electromechanical computer ⓘ general-purpose computer ⓘ |
| alsoKnownAs |
ASCC
ⓘ
IBM Automatic Sequence Controlled Calculator ⓘ
linked to:
Harvard Mark I computer
|
| architecture | Harvard architecture ⓘ |
| clockSpeed | about 3 additions per second ⓘ |
| commissionedBy | United States Navy ⓘ |
| component |
clutches
ⓘ
relays ⓘ rotary switches ⓘ vacuum tubes (limited use) ⓘ |
| countryOfOrigin |
United States
ⓘ
linked to:
United States of America
|
| dateCompleted | 1944 ⓘ |
| dateInaugurated | 1944-08-07 ⓘ |
| depth | about 2 feet ⓘ |
| designer |
Howard H. Aiken
ⓘ
linked to:
Howard Aiken
|
| developer |
Harvard University
ⓘ
IBM ⓘ |
| exhibitedAt |
Harvard Science Center (partial reconstruction)
ⓘ
linked to:
Science Center (Harvard University)
|
| feature | separate storage for data and instructions ⓘ |
| fundedBy |
Harvard University
ⓘ
IBM ⓘ |
| height | about 8 feet ⓘ |
| historicalSignificance |
one of the first large-scale automatic digital computers
ⓘ
pioneered separation of data and instruction storage ⓘ |
| influenced |
Harvard Mark II
ⓘ
Harvard architecture concept ⓘ |
| inputMethod |
punched cards
ⓘ
punched tape ⓘ |
| length | about 51 feet ⓘ |
| locatedIn |
Cambridge, Massachusetts
ⓘ
Harvard University ⓘ |
| material |
glass panels
ⓘ
steel frame ⓘ |
| notableUser |
Grace Hopper
ⓘ
Howard H. Aiken ⓘ
linked to:
Howard Aiken
|
| numericalSystem | decimal ⓘ |
| operatedBy | Harvard Computation Laboratory ⓘ |
| operation | automatic sequence control ⓘ |
| outputMethod |
electric typewriters
ⓘ
punch card machines ⓘ |
| powerSource | electromechanical relays ⓘ |
| programmingMethod |
paper tape control
ⓘ
plugboards ⓘ |
| purpose |
ballistics calculations
ⓘ
military computations ⓘ scientific calculations ⓘ |
| usedDuring | World War II ⓘ |
| weight | about 5 tons ⓘ |
| wordLength | 23 decimal digits ⓘ |
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 I computer Description of subject: 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.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Harvard Mark I computer
linked to: Harvard Mark I computer
linked to: Harvard Mark I computer
subject linked to:
Harvard Mark I computer
linked to: Harvard Mark I computer