ORDVAC

E418549

early electronic computer military computer stored-program computer

ORDVAC was an early stored-program electronic computer built for the U.S. Army that helped pioneer modern computer architecture and numerical computation.

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All labels observed (2)

Label	Occurrences
Ordnance Discrete Variable Automatic Computer	2
ORDVAC canonical	1

How this entity was disambiguated

This entity first appeared as the object of triple T4093916 — 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: ORDVAC
Context triple: [IAS machine, influenced, ORDVAC]

A. 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.
B. 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.
C. 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.
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: ORDVAC
Target entity description: ORDVAC was an early stored-program electronic computer built for the U.S. Army that helped pioneer modern computer architecture and numerical computation.

A. 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.
B. 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.
C. 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.
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 (47)

Predicate	Object
instanceOf	early electronic computer ⓘ military computer ⓘ stored-program computer ⓘ
abbreviationOf	Ordnance Discrete Variable Automatic Computer ⓘ linked to: ORDVAC
architectureType	binary digital computer ⓘ stored-program architecture ⓘ
commissionedBy	U.S. Army Ordnance Department ⓘ linked to: United States Ordnance Department United States Army ⓘ
countryOfOrigin	United States ⓘ linked to: United States of America
developer	Digital Computer Laboratory at the University of Illinois ⓘ linked to: Digital Computer Laboratory, University of Illinois University of Illinois ⓘ linked to: University of Illinois system
era	first generation computer ⓘ
field	computer architecture ⓘ numerical analysis ⓘ
fullName	Ordnance Discrete Variable Automatic Computer ⓘ linked to: ORDVAC
historicalSignificance	contributed to the development of modern computer architecture concepts ⓘ one of the earliest stored-program computers used by the U.S. military ⓘ
inputDevice	paper tape ⓘ punched cards ⓘ
inspiredBy	IAS architecture ⓘ linked to: Harvard architecture
locationCountry	United States ⓘ linked to: United States of America
locationInstalled	Aberdeen Proving Ground ⓘ linked to: Aberdeen Proving Ground, Maryland
logicType	vacuum tube logic ⓘ
memoryCapacity	1024 words of main memory ⓘ
memoryType	Williams tube electrostatic memory ⓘ linked to: Williams tube electrostatic cathode-ray tube memory ⓘ
notableFor	early implementation of stored-program concept ⓘ influencing later computer designs at the University of Illinois ⓘ pioneering numerical computation for the U.S. Army ⓘ
numberSystem	binary ⓘ
operationalStatus	decommissioned ⓘ
organizationRole	computing facility for Aberdeen Proving Ground ⓘ
outputDevice	paper tape punch ⓘ printer ⓘ
powerRequirement	high power consumption typical of vacuum tube computers ⓘ
primaryUser	United States Army ⓘ
programStorage	stored in same memory as data ⓘ
purpose	ballistics computation ⓘ military research computation ⓘ scientific computation ⓘ
relatedProject	ILLIAC I ⓘ
similarTo	ILLIAC I ⓘ
technology	vacuum tube electronics ⓘ
usedFor	ballistic trajectory calculations ⓘ scientific simulations ⓘ weapons research calculations ⓘ
wordLength	40-bit word length ⓘ

How these facts were elicited

Referenced by (3)

Full triples — surface form annotated when it differs from this entity's canonical label.

IAS machine → influenced → ORDVAC ⓘ

ORDVAC → fullName → Ordnance Discrete Variable Automatic Computer ⓘ

linked to: ORDVAC

ORDVAC → abbreviationOf → Ordnance Discrete Variable Automatic Computer ⓘ