IBM code page 437
E699601
IBM code page 437 is the original character set of the IBM PC, featuring ASCII characters plus extended graphic symbols used widely in early DOS text interfaces.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Code page 437 | 1 |
| IBM code page 437 canonical | 1 |
| IBM437 | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7935752 — 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: IBM code page 437 Context triple: [Monochrome Display Adapter, codePage, IBM code page 437]
-
A.
ISO 646
ISO 646 is an international standard for 7-bit character encodings that defines a set of basic Latin characters and allows national variants, serving as a foundation for many early computer character sets.
-
B.
ISO/IEC 8859-1
ISO/IEC 8859-1 is an 8-bit single-byte character encoding standard that covers Western European languages and was widely used before the adoption of Unicode.
-
C.
Windows-1252
Windows-1252 is a character encoding used primarily on Microsoft Windows systems that extends ISO 8859-1 with additional printable characters, including typographic punctuation and symbols.
-
D.
ISO/IEC 2022
ISO/IEC 2022 is an international standard that defines mechanisms for encoding and switching between multiple character sets within a single byte-oriented data stream.
-
E.
ISO/IEC 8859
ISO/IEC 8859 is a family of 8-bit character encoding standards that define various single-byte coded character sets for different languages and scripts, widely used before the adoption of Unicode.
- 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: IBM code page 437 Target entity description: IBM code page 437 is the original character set of the IBM PC, featuring ASCII characters plus extended graphic symbols used widely in early DOS text interfaces.
-
A.
ISO 646
ISO 646 is an international standard for 7-bit character encodings that defines a set of basic Latin characters and allows national variants, serving as a foundation for many early computer character sets.
-
B.
ISO/IEC 8859-1
ISO/IEC 8859-1 is an 8-bit single-byte character encoding standard that covers Western European languages and was widely used before the adoption of Unicode.
-
C.
Windows-1252
Windows-1252 is a character encoding used primarily on Microsoft Windows systems that extends ISO 8859-1 with additional printable characters, including typographic punctuation and symbols.
-
D.
ISO/IEC 2022
ISO/IEC 2022 is an international standard that defines mechanisms for encoding and switching between multiple character sets within a single byte-oriented data stream.
-
E.
ISO/IEC 8859
ISO/IEC 8859 is a family of 8-bit character encoding standards that define various single-byte coded character sets for different languages and scripts, widely used before the adoption of Unicode.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
IBM PC character set
ⓘ
character encoding ⓘ code page ⓘ |
| alsoKnownAs |
CP437
ⓘ
Code page 437 ⓘ
linked to:
IBM code page 437
DOS Latin US ⓘ IBM437 ⓘ
linked to:
IBM code page 437
OEM-US ⓘ PC-8 ⓘ |
| asciiCompatibility | First 128 code points identical to ASCII ⓘ |
| category | OEM code page ⓘ |
| characterSetSize | 256 ⓘ |
| codeRange | 0–255 ⓘ |
| contains |
Greek letters
ⓘ
block elements ⓘ box-drawing characters ⓘ card suit symbols ⓘ control characters ⓘ mathematical symbols ⓘ miscellaneous symbols ⓘ printable characters ⓘ shade characters ⓘ smiley faces ⓘ |
| defaultOn |
many early PC-compatible systems
ⓘ
original IBM PC BIOS ⓘ |
| developer | IBM ⓘ |
| encodingBits | 8-bit ⓘ |
| influenced | many DOS code pages ⓘ |
| introducedFor |
IBM PC 5150
ⓘ
linked to:
IBM PC
IBM Personal Computer ⓘ
linked to:
IBM PC
|
| introducedInYear | 1981 ⓘ |
| mappedTo | Unicode code points ⓘ |
| notableFeature |
first widely used 8-bit character set on IBM PCs
ⓘ
rich set of box-drawing and block characters for text UIs ⓘ |
| oemCodePageFor |
MS-DOS
ⓘ
PC DOS ⓘ
linked to:
MS-DOS
|
| primaryUse |
IBM PC text mode display
ⓘ
MS-DOS text user interfaces ⓘ PC BIOS text output ⓘ |
| region |
United States
ⓘ
linked to:
United States of America
Western Europe (early PCs) ⓘ |
| standardizedAs | IBM PC OEM code page ⓘ |
| subsetOf | ASCII ⓘ |
| supersededBy |
Unicode
ⓘ
Windows-1252 ⓘ |
| usedFor |
legacy console applications
ⓘ
pseudo-graphical frames and windows ⓘ text-mode user interface graphics ⓘ |
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: IBM code page 437 Description of subject: IBM code page 437 is the original character set of the IBM PC, featuring ASCII characters plus extended graphic symbols used widely in early DOS text interfaces.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: IBM code page 437
linked to: IBM code page 437