# WDC 65C21

> Peripheral Interface Adapter

**Wikidata**: [Q7948330](https://www.wikidata.org/wiki/Q7948330)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/WDC_65C21)  
**Source**: https://4ort.xyz/entity/wdc-65c21

## Summary
The WDC 65C21 is a Peripheral Interface Adapter, a type of microprocessor contained on an integrated-circuit chip. It is classified as a subclass of microprocessor and was part of the broader category of computer processors. The device is notable for its role in interfacing with peripheral devices in early computing systems.

## Key Facts
- The WDC 65C21 is a subclass of microprocessor.
- It is an integrated-circuit chip designed as a Peripheral Interface Adapter.
- The device has a Wikipedia page titled "WDC 65C21" in English.
- It is associated with the Freebase ID /m/0bbl_x.
- The WDC 65C21 has an image available on Wikimedia Commons.
- The device has a sitelink count of 1, indicating its presence in one linked data source.
- The Wikidata description for the WDC 65C21 is "Peripheral Interface Adapter."

## FAQs
**What is the WDC 65C21?**
The WDC 65C21 is a Peripheral Interface Adapter, a type of microprocessor contained on an integrated-circuit chip. It is classified as a subclass of microprocessor and was used in early computing systems to interface with peripheral devices.

**What is the WDC 65C21 used for?**
The WDC 65C21 is primarily used as a Peripheral Interface Adapter, facilitating communication between a computer's central processing unit and external devices such as printers, modems, and storage systems.

**Where can I find more information about the WDC 65C21?**
More information about the WDC 65C21 can be found on its Wikipedia page, which is titled "WDC 65C21" in English. Additionally, an image of the device is available on Wikimedia Commons.

**What is the significance of the WDC 65C21 in computing history?**
The WDC 65C21 played a role in early computing systems by serving as a Peripheral Interface Adapter, enabling the connection and communication of peripheral devices with the central processing unit.

## Why It Matters
The WDC 65C21 is significant in the history of computing as it was a key component in early systems, facilitating the interaction between the central processing unit and peripheral devices. Its role as a Peripheral Interface Adapter was crucial in enabling the expansion of computing capabilities by allowing external devices to communicate with the main processor. The device's integrated-circuit design contributed to the efficiency and reliability of early computing systems, making it an important part of the technological advancements of the era.

## Notable For
- Being a subclass of microprocessor, specifically designed as a Peripheral Interface Adapter.
- Having a Wikipedia page in English, providing detailed information about its specifications and applications.
- Being associated with a Freebase ID, indicating its inclusion in linked data sources.
- Having an image available on Wikimedia Commons, which can be used for reference and documentation purposes.

## Body
### Classification and Function
The WDC 65C21 is classified as a subclass of microprocessor, specifically designed as a Peripheral Interface Adapter. This classification indicates its role in interfacing with peripheral devices in computing systems. The device is contained on an integrated-circuit chip, which allows for compact and efficient design.

### Wikipedia and Documentation
The WDC 65C21 has a Wikipedia page titled "WDC 65C21" in English, providing detailed information about its specifications and applications. The page is available in one language, English, and has a sitelink count of 1, indicating its presence in one linked data source. The Wikidata description for the WDC 65C21 is "Peripheral Interface Adapter," which further clarifies its function.

### Image and Visual Reference
An image of the WDC 65C21 is available on Wikimedia Commons, which can be used for reference and documentation purposes. The image is titled "W65C21S6TPG-14_lg.jpg" and provides a visual representation of the device.

### Freebase ID and Linked Data
The WDC 65C21 is associated with the Freebase ID /m/0bbl_x, indicating its inclusion in linked data sources. This ID can be used to reference the device in various databases and knowledge graphs.

### Historical Significance
The WDC 65C21 played a role in early computing systems by serving as a Peripheral Interface Adapter. Its integrated-circuit design contributed to the efficiency and reliability of early computing systems, making it an important part of the technological advancements of the era. The device's ability to interface with peripheral devices was crucial in enabling the expansion of computing capabilities.