NDAC
E6435
NDAC is a dedicated handshake signal line in the IEEE 488 (GPIB) interface used by devices to indicate that they have not yet accepted data.
All labels observed (1)
| Label | Occurrences |
|---|---|
| NDAC canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T73005 — 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: NDAC Context triple: [IEEE 488, hasSignalLine, NDAC]
-
A.
NCP
NCP (Network Control Protocol) was an early host-to-host communication protocol suite that enabled data exchange between computers on the ARPANET before the adoption of TCP/IP.
-
B.
DCA
DCA (Defense Communications Agency) was a U.S. Department of Defense organization responsible for managing and overseeing military communications networks, including early internet precursor systems.
-
C.
DCA
DCA is the three-letter IATA airport code for Ronald Reagan Washington National Airport, the primary domestic airport serving Washington, D.C.
-
D.
ECA
The Economic Cooperation Administration (ECA) was the U.S. government agency responsible for administering the Marshall Plan to aid European economic recovery after World War II.
-
E.
NAM
NAM is the commonly used acronym for the National Academy of Medicine, a leading U.S. nonprofit institution that provides expert advice on health, medicine, and biomedical science.
- 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: NDAC Target entity description: NDAC is a dedicated handshake signal line in the IEEE 488 (GPIB) interface used by devices to indicate that they have not yet accepted data.
-
A.
NCP
NCP (Network Control Protocol) was an early host-to-host communication protocol suite that enabled data exchange between computers on the ARPANET before the adoption of TCP/IP.
-
B.
DCA
DCA (Defense Communications Agency) was a U.S. Department of Defense organization responsible for managing and overseeing military communications networks, including early internet precursor systems.
-
C.
DCA
DCA is the three-letter IATA airport code for Ronald Reagan Washington National Airport, the primary domestic airport serving Washington, D.C.
-
D.
ECA
The Economic Cooperation Administration (ECA) was the U.S. government agency responsible for administering the Marshall Plan to aid European economic recovery after World War II.
-
E.
NAM
NAM is the commonly used acronym for the National Academy of Medicine, a leading U.S. nonprofit institution that provides expert advice on health, medicine, and biomedical science.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf |
GPIB signal
ⓘ
IEEE 488 signal ⓘ handshake signal line ⓘ |
| abbreviationFor | Not Data Accepted ⓘ |
| belongsTo | GPIB handshake group ⓘ |
| busCategory | control and handshake line ⓘ |
| direction | driven by listeners and talkers ⓘ |
| electricalRole | open‑collector line with wired‑OR behavior ⓘ |
| fullName | Not Data Accepted ⓘ |
| function |
indicates that addressed device has not yet accepted data
ⓘ
participates in three‑wire handshake on IEEE 488 bus ⓘ |
| handshakeRole | indicates completion of data acceptance when released ⓘ |
| logicConvention | active low ⓘ |
| relatedSignal |
DAV
ⓘ
NRFD ⓘ |
| signalPolarity |
false when line is high
ⓘ
true when line is low ⓘ |
| signalType | handshake line ⓘ |
| standardizedIn |
IEC 60488
ⓘ
IEEE 488 ⓘ
linked to:
IEEE 488 GPIB standard
|
| usedBy |
GPIB controllers
ⓘ
GPIB listeners ⓘ GPIB talkers ⓘ |
| usedIn |
GPIB interface
ⓘ
IEEE 488 bus ⓘ
linked to:
IEEE 488 GPIB standard
|
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: NDAC Description of subject: NDAC is a dedicated handshake signal line in the IEEE 488 (GPIB) interface used by devices to indicate that they have not yet accepted data.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
IEEE 488 GPIB standard