RCA 1802 microprocessor
E15992
The RCA 1802 microprocessor is an early CMOS-based 8-bit CPU notable for its low power consumption, radiation hardness, and use in spacecraft and embedded systems in the 1970s and 1980s.
All labels observed (11)
| Label | Occurrences |
|---|---|
| RCA 1802 microprocessor canonical | 3 |
| RCA CDP1802 | 3 |
| COSMAC 1802 | 1 |
| COSMAC 1802 architecture | 1 |
| RCA 1802 ISA | 1 |
| RCA CDP1804 | 1 |
| RCA CDP1805 | 1 |
| RCA CDP1806 | 1 |
| RCA COSMAC | 1 |
| RCA COSMAC architecture | 1 |
| RCA VIP computer | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T136631 — 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: RCA 1802 microprocessor Context triple: [Radio Corporation of America, developed, RCA 1802 microprocessor]
-
A.
Honeywell DDP-516 minicomputer
The Honeywell DDP-516 minicomputer was a rugged, 16-bit computer from the 1960s widely used in real-time and military applications, notably serving as the hardware platform for the original ARPANET Interface Message Processors.
-
B.
Motorola 68000 family
The Motorola 68000 family is a line of 16/32-bit CISC microprocessors widely used in early personal computers, workstations, and game consoles during the 1980s and early 1990s.
-
C.
IBM System/360
IBM System/360 is a landmark family of mainframe computers introduced in the 1960s that standardized computer architecture and revolutionized business and scientific computing.
-
D.
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.
-
E.
von Neumann architecture
The von Neumann architecture is a foundational computer design model in which a single memory stores both program instructions and data, executed sequentially by a central processing unit.
- 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: RCA 1802 microprocessor Target entity description: The RCA 1802 microprocessor is an early CMOS-based 8-bit CPU notable for its low power consumption, radiation hardness, and use in spacecraft and embedded systems in the 1970s and 1980s.
-
A.
Honeywell DDP-516 minicomputer
The Honeywell DDP-516 minicomputer was a rugged, 16-bit computer from the 1960s widely used in real-time and military applications, notably serving as the hardware platform for the original ARPANET Interface Message Processors.
-
B.
Motorola 68000 family
The Motorola 68000 family is a line of 16/32-bit CISC microprocessors widely used in early personal computers, workstations, and game consoles during the 1980s and early 1990s.
-
C.
IBM System/360
IBM System/360 is a landmark family of mainframe computers introduced in the 1960s that standardized computer architecture and revolutionized business and scientific computing.
-
D.
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.
-
E.
von Neumann architecture
The von Neumann architecture is a foundational computer design model in which a single memory stores both program instructions and data, executed sequentially by a central processing unit.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
8-bit microprocessor
ⓘ
CMOS microprocessor ⓘ microprocessor ⓘ |
| addressBusWidth | 16-bit ⓘ |
| alsoKnownAs |
RCA 1802 microprocessor
ⓘ
surface form:
COSMAC 1802
RCA 1802 microprocessor ⓘ
surface form:
RCA CDP1802
|
| applicationDomain |
industrial control
ⓘ
military systems ⓘ scientific instruments ⓘ |
| architecture | 8-bit ⓘ |
| clockType | external clock input ⓘ |
| controlUnitType | hardwired ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| dataBusWidth | 8-bit ⓘ |
| designGoal |
low power operation
ⓘ
radiation tolerance ⓘ |
| fabricationProcess | silicon-gate CMOS ⓘ |
| instructionSetType | register-based ⓘ |
| intendedUse |
embedded systems
ⓘ
spacecraft systems ⓘ |
| introducedInDecade | 1970s ⓘ |
| introducedInYear | 1976 ⓘ |
| logicFamily |
RCA 1802 microprocessor
self-linksurface differs
ⓘ
surface form:
RCA COSMAC
|
| manufacturer | RCA ⓘ |
| marketedBy | RCA ⓘ |
| notableFeature |
can be clocked down to 0 Hz
ⓘ
low power consumption ⓘ radiation hardness ⓘ register-based architecture ⓘ separate I/O instructions ⓘ simple instruction set ⓘ static core design ⓘ |
| numberOfGeneralPurposeRegisters | 16 ⓘ |
| powerSupplyVoltage | 5 V ⓘ |
| registerWidth | 16-bit ⓘ |
| successor |
RCA 1802 microprocessor
self-linksurface differs
ⓘ
surface form:
RCA CDP1804
RCA 1802 microprocessor self-linksurface differs ⓘ
surface form:
RCA CDP1805
RCA 1802 microprocessor self-linksurface differs ⓘ
surface form:
RCA CDP1806
|
| technology | CMOS ⓘ |
| usedIn |
COSMAC ELF computer
ⓘ
Galileo spacecraft ⓘ Hubble Space Telescope subsystems ⓘ Magellan spacecraft ⓘ NASA spacecraft ⓘ RCA 1802 microprocessor self-linksurface differs ⓘ
surface form:
RCA VIP computer
hobbyist computers ⓘ space-rated electronics ⓘ various satellites ⓘ |
| wordSize | 8-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: RCA 1802 microprocessor Description of subject: The RCA 1802 microprocessor is an early CMOS-based 8-bit CPU notable for its low power consumption, radiation hardness, and use in spacecraft and embedded systems in the 1970s and 1980s.
Referenced by (15)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
RCA COSMAC architecture
this entity surface form:
RCA CDP1802
this entity surface form:
COSMAC 1802
this entity surface form:
RCA VIP computer
this entity surface form:
RCA COSMAC
this entity surface form:
RCA CDP1804
this entity surface form:
RCA CDP1805
this entity surface form:
RCA CDP1806
subject surface form:
COSMAC ELF
subject surface form:
COSMAC ELF
this entity surface form:
RCA CDP1802
subject surface form:
COSMAC ELF
this entity surface form:
COSMAC 1802 architecture
this entity surface form:
RCA CDP1802
this entity surface form:
RCA 1802 ISA