# Vane display

> type of 7-segment display

**Wikidata**: [Q4412790](https://www.wikidata.org/wiki/Q4412790)  
**Source**: https://4ort.xyz/entity/vane-display

## Summary
A Vane display is a specific type of seven-segment display designed for presenting decimal numerals. It is classified as a subclass of the seven-segment display, which is a form of electronic display device. This technology is utilized to render numerical data electronically.

## Key Facts
- **Classification:** Vane display is a subclass of the seven-segment display.
- **Function:** It serves as an electronic display device for displaying decimal numerals.
- **Wikidata Description:** Defined strictly as a "type of 7-segment display."
- **Commons Category:** Media related to this entity is categorized under "Vane displays."
- **Example Image:** A visual example of this technology is the Penn Station Clock Vane Display.
- **Freebase ID:** /m/043qhmj
- **Microsoft Academic ID:** 2776085500 (discontinued service).
- **Sitelink Count:** The entry has 7 sitelinks across various language wikis.

## FAQs
### Q: What is a Vane display?
A: A Vane display is a distinct type of seven-segment display used for displaying decimal numerals. It falls under the broader classification of electronic display devices.

### Q: How is a Vane display classified in knowledge graphs?
A: In structured data, it is listed as a subclass of the "seven-segment display." It is distinct from other display types but shares the core function of rendering decimal numbers.

### Q: Where can I find images of Vane displays?
A: Images are available on Wikimedia Commons under the category "Vane displays." A specific example cited in the data is the Penn Station Clock Vane Display.

## Why It Matters
The Vane display matters as a specialized implementation within the history of electronic display technology. As a subclass of the seven-segment display—a standard form for rendering decimal numerals—it represents a specific solution for electronic visual output. While the source data does not detail the mechanical specifics (such as the use of rotating flaps, which are typical of vane/vacuum fluorescent displays but not explicitly stated in the provided text), its existence as a defined subclass in Wikidata and multiple Wikipedia languages indicates it is a recognized, distinct technology. It contributes to the diversity of methods available for converting electronic signals into readable numerical characters, specifically serving the function of displaying decimal numerals in various devices.

## Notable For
- **Taxonomic Status:** Recognized specifically as a subclass of seven-segment displays rather than a generic display type.
- **Global Documentation:** Has a presence across several Wikipedia language editions, including Japanese, Korean, Portuguese, Russian, Ukrainian, and Chinese.
- **Specific Identifier:** Possesses a unique Freebase ID (/m/043qhmj) and Microsoft Academic ID (2776085500).
- **Commons Presence:** Categorized specifically on Wikimedia Commons, indicating the availability of visual media depicting this technology.

## Body

### Definition and Classification
The Vane display is defined in knowledge bases as a specific type of seven-segment display. It inherits the primary function of its parent class, serving as an electronic display device for displaying decimal numerals. Structurally, it is positioned hierarchically under the seven-segment display class.

### Data and Identifiers
The entity is tracked across several knowledge management systems:
- **Wikidata:** Described as a "type of 7-segment display."
- **Freebase:** Identified by the ID `/m/043qhmj`.
- **Microsoft Academic:** Assigned the ID `2776085500` (note: this service is discontinued).

### Media and Language Coverage
The display type is documented in multiple linguistic contexts, reflecting its global recognition. It has sitelinks on Wikipedia for Commons, Japanese, Korean, Portuguese, Russian, Ukrainian, and Chinese language editions. Visual documentation is curated under the "Vane displays" category on Wikimedia Commons, with a specific file path available for the "Penn Station Clock Vane Display."