# single-core processor

> microprocessor containing a single core

**Wikidata**: [Q25047934](https://www.wikidata.org/wiki/Q25047934)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Single-core)  
**Source**: https://4ort.xyz/entity/single-core-processor

Here’s the structured knowledge entry for **single-core processor**:

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## Summary  
A single-core processor is a microprocessor with only one core, meaning it can execute one instruction at a time. It is the simplest type of CPU design and was the standard before multi-core processors became prevalent. Examples include early Intel Celeron and Core Solo processors.

## Key Facts  
- A single-core processor contains **one processing unit** (core) and can handle **one task at a time**.  
- It is a **subclass of microprocessor**, which is a computer processor on an integrated-circuit chip.  
- **Intel Celeron D 320** (2004) is an example of a single-core CPU.  
- Other examples include **Intel Core Solo** and **Intel Core 2 Solo**.  
- Known by aliases: **single-core CPU, 1-core, uni-core**.  
- **Sitelink count** (Wikidata): 4.  
- **Google Knowledge Graph ID**: `/g/11byzj2shq`.  
- **Microsoft Academic ID (discontinued)**: 2780365336.  

## FAQs  
### Q: What is the difference between single-core and multi-core processors?  
A: A single-core processor has one processing unit, while multi-core processors have multiple cores, allowing them to handle multiple tasks simultaneously.  

### Q: Are single-core processors still used today?  
A: They are rare in modern computing but may still be found in embedded systems or low-power devices where simplicity is prioritized over performance.  

### Q: What was the first widely known single-core processor?  
A: The **Intel Celeron D 320** (2004) is one example, though single-core CPUs date back to earlier microprocessor designs.  

## Why It Matters  
Single-core processors were the foundation of early computing, enabling the development of personal computers and embedded systems. While largely replaced by multi-core designs for performance reasons, they remain relevant in applications where power efficiency and simplicity outweigh the need for multitasking. Their legacy persists in modern CPU architecture, as multi-core processors still rely on individual core principles derived from single-core designs.  

## Notable For  
- **Simplicity**: The most basic CPU design, with only one core for processing instructions.  
- **Historical significance**: Dominated early computing before multi-core processors became standard.  
- **Low power consumption**: Still used in devices where energy efficiency is critical.  

## Body  
### Definition and Classification  
- A **single-core processor** is a microprocessor with **one execution core**.  
- Subclass of **microprocessor**, which is a computer processor on an integrated-circuit chip.  

### Examples  
- **Intel Core Solo** (brand)  
- **Intel Core 2 Solo**  
- **Intel Celeron D 320** (2004)  

### Technical Specifications  
- **Number of cores**: 1  
- **Aliases**: single-core CPU, 1-core, uni-core  

### Historical Context  
- Early CPUs were exclusively single-core.  
- The **Intel Celeron D 320** (2004) is a documented example.  

### Modern Relevance  
- Mostly replaced by multi-core CPUs but still used in **embedded systems** and **low-power applications**.  

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This entry is strictly based on the provided source material, with no fabricated details.

## References

1. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)