IBM PC AT
E37193
The IBM PC AT is a second-generation IBM personal computer introduced in 1984 that featured the Intel 80286 processor and set many hardware and expansion standards for business PCs.
All labels observed (5)
| Label | Occurrences |
|---|---|
| IBM PC/AT | 7 |
| IBM PC AT canonical | 3 |
| IBM PC/AT–class computers | 1 |
| IBM Personal Computer AT | 1 |
| PC/AT bus architecture | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T272518 — 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 PC AT Context triple: [IBM PC, inspired, IBM PC AT]
-
A.
IBM PC
The IBM PC is the original 1981 personal computer model from IBM that became a de facto industry standard and helped popularize home and business computing worldwide.
-
B.
IBM PC XT
The IBM PC XT is an early 1980s personal computer from IBM that expanded on the original IBM PC with a built-in hard drive and more expansion capabilities, becoming a widely used business desktop system.
-
C.
Intel 8088
The Intel 8088 is an 8-bit external, 16-bit internal microprocessor from Intel’s x86 family, best known as the CPU used in the original IBM PC that helped establish the PC-compatible standard.
-
D.
Intel 8086
The Intel 8086 is a 16-bit microprocessor introduced in 1978 that formed the basis of the x86 architecture used in most modern personal computers.
-
E.
CP/M-86
CP/M-86 is a 16-bit version of the CP/M operating system designed for Intel 8086/8088-based computers, serving as an early alternative to MS-DOS on machines like the IBM PC.
- 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 PC AT Target entity description: The IBM PC AT is a second-generation IBM personal computer introduced in 1984 that featured the Intel 80286 processor and set many hardware and expansion standards for business PCs.
-
A.
IBM PC
The IBM PC is the original 1981 personal computer model from IBM that became a de facto industry standard and helped popularize home and business computing worldwide.
-
B.
IBM PC XT
The IBM PC XT is an early 1980s personal computer from IBM that expanded on the original IBM PC with a built-in hard drive and more expansion capabilities, becoming a widely used business desktop system.
-
C.
Intel 8088
The Intel 8088 is an 8-bit external, 16-bit internal microprocessor from Intel’s x86 family, best known as the CPU used in the original IBM PC that helped establish the PC-compatible standard.
-
D.
Intel 8086
The Intel 8086 is a 16-bit microprocessor introduced in 1978 that formed the basis of the x86 architecture used in most modern personal computers.
-
E.
CP/M-86
CP/M-86 is a 16-bit version of the CP/M operating system designed for Intel 8086/8088-based computers, serving as an early alternative to MS-DOS on machines like the IBM PC.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
IBM PC compatible
ⓘ
personal computer ⓘ |
| abbreviation | AT ⓘ |
| architecture | x86 ⓘ |
| baseRAM |
256 KB
ⓘ
512 KB ⓘ |
| bios |
ROM BIOS
ⓘ
surface form:
IBM AT BIOS
|
| biosVendor | IBM ⓘ |
| busType | ISA ⓘ |
| busWidth | 16-bit ISA ⓘ |
| caseType | full-height desktop case ⓘ |
| category |
1980s computers
ⓘ
IBM PC compatible ⓘ
surface form:
IBM personal computers
|
| chipsetFeature |
CMOS real-time clock
ⓘ
battery-backed CMOS configuration memory ⓘ |
| codename | Advanced Technology ⓘ |
| compatibleWith |
IBM PC XT software
ⓘ
IBM PC software ⓘ |
| cpu | Intel 80286 ⓘ |
| cpuClockSpeed |
6 MHz
ⓘ
8 MHz ⓘ |
| cpuWordSize | 16-bit ⓘ |
| expansionSlots | ISA expansion slots ⓘ |
| floppyController | AT floppy disk controller ⓘ |
| formFactor | desktop computer ⓘ |
| graphicsAdapter |
CGA
ⓘ
EGA ⓘ MDA ⓘ |
| influenced |
AT form factor standard
ⓘ
AT-style power connectors ⓘ EISA ⓘ
surface form:
ISA expansion bus standard
|
| introduced | 1984 ⓘ |
| introducedAs | successor to IBM PC XT ⓘ |
| keyboardConnector | 5-pin DIN keyboard connector ⓘ |
| keyboardType | 84-key AT keyboard ⓘ |
| manufacturer | IBM ⓘ |
| marketedFor | business computing ⓘ |
| maxRAM | 16 MB theoretical ⓘ |
| memoryType | DRAM ⓘ |
| operatingSystem |
MS-DOS
ⓘ
MS-DOS ⓘ
surface form:
PC DOS
Xenix ⓘ |
| powerSupply | 192-watt power supply ⓘ |
| predecessor | IBM PC XT ⓘ |
| realModeAddressLimit | 1 MB ⓘ |
| standardFloppyDrive | 1.2 MB 5.25-inch floppy drive ⓘ |
| standardHardDisk | 20 MB hard disk drive ⓘ |
| storageInterface | ST-506 hard disk interface ⓘ |
| successor | IBM Personal System/2 line ⓘ |
| supportedFloppyDrive | 360 KB 5.25-inch floppy drive ⓘ |
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 PC AT Description of subject: The IBM PC AT is a second-generation IBM personal computer introduced in 1984 that featured the Intel 80286 processor and set many hardware and expansion standards for business PCs.
Referenced by (13)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
IBM PC/AT
this entity surface form:
IBM PC/AT–class computers
this entity surface form:
IBM PC/AT
this entity surface form:
IBM PC/AT
subject surface form:
Enhanced Graphics Adapter
this entity surface form:
IBM PC/AT
this entity surface form:
IBM PC/AT