EDSAC 2
E905430
EDSAC 2 was an early British stored-program computer designed at the University of Cambridge as a successor to EDSAC, notable for pioneering microprogramming and advanced hardware techniques.
All labels observed (1)
| Label | Occurrences |
|---|---|
| EDSAC 2 canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T11100824 — 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: EDSAC 2 Context triple: [Maurice Wilkes, notableWork, EDSAC 2]
-
A.
EDSAC
EDSAC was one of the earliest stored-program electronic computers, built at the University of Cambridge in the late 1940s and used primarily for scientific and mathematical research.
-
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.
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.
-
D.
Johnniac computer
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.
-
E.
Ferranti Mark I computer
The Ferranti Mark I computer was one of the world’s first commercially available general-purpose electronic computers, developed in the early 1950s from the Manchester Mark I design.
- 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: EDSAC 2 Target entity description: EDSAC 2 was an early British stored-program computer designed at the University of Cambridge as a successor to EDSAC, notable for pioneering microprogramming and advanced hardware techniques.
-
A.
EDSAC
EDSAC was one of the earliest stored-program electronic computers, built at the University of Cambridge in the late 1940s and used primarily for scientific and mathematical research.
-
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.
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.
-
D.
Johnniac computer
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.
-
E.
Ferranti Mark I computer
The Ferranti Mark I computer was one of the world’s first commercially available general-purpose electronic computers, developed in the early 1950s from the Manchester Mark I design.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
early computer
ⓘ
second-generation computer ⓘ stored-program computer ⓘ |
| architecture |
bit-slice design concepts
ⓘ
microprogrammed control ⓘ |
| arithmetic |
fixed-point arithmetic
ⓘ
floating-point arithmetic ⓘ |
| category |
British computer
ⓘ
historical computer system ⓘ microprogrammed computer ⓘ |
| controlStore |
diode matrix
ⓘ
read-only microprogram store ⓘ |
| country | United Kingdom ⓘ |
| decommissioned | mid-1960s ⓘ |
| designer |
David Wheeler
ⓘ
Maurice Wilkes ⓘ other staff of Cambridge Mathematical Laboratory ⓘ |
| designStart | early 1950s ⓘ |
| developer |
Mathematical Laboratory, University of Cambridge
ⓘ
University of Cambridge ⓘ
linked to:
Cambridge University
|
| field | computer science history ⓘ |
| firstOperational | 1958 ⓘ |
| influenced |
control store design in computers
ⓘ
later microprogrammed computers ⓘ |
| influencedBy |
EDSAC
ⓘ
Maurice Wilkes microprogramming ideas ⓘ |
| input | punched tape ⓘ |
| location | Cambridge, England ⓘ |
| logicFamily |
germanium diode logic
ⓘ
vacuum tube logic ⓘ |
| mainMemoryTechnology | core store ⓘ |
| memoryType |
Williams tube (early stages / experimentation)
ⓘ
linked to:
Williams–Kilburn tube
magnetic core memory ⓘ |
| notableFor |
advanced hardware techniques
ⓘ
pioneering microprogramming ⓘ |
| numberRepresentation | binary ⓘ |
| operatingSystem | no formal operating system ⓘ |
| output |
line printer
ⓘ
teleprinter ⓘ |
| powerSource | mains electricity ⓘ |
| predecessor | EDSAC ⓘ |
| projectLeader | Maurice Wilkes ⓘ |
| successor | Titan (Atlas 2) ⓘ |
| university |
University of Cambridge
ⓘ
linked to:
Cambridge University
|
| usedAt | University of Cambridge Mathematical Laboratory ⓘ |
| usedFor |
numerical analysis
ⓘ
scientific computing ⓘ university research ⓘ |
| wordLength | 48-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: EDSAC 2 Description of subject: EDSAC 2 was an early British stored-program computer designed at the University of Cambridge as a successor to EDSAC, notable for pioneering microprogramming and advanced hardware techniques.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.