# synchronous programming language

> programming language for programming reactive systems

**Wikidata**: [Q2375732](https://www.wikidata.org/wiki/Q2375732)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Synchronous_programming_language)  
**Source**: https://4ort.xyz/entity/synchronous-programming-language

## Summary
A synchronous programming language is a programming language designed for programming reactive systems. It is a manifestation of the synchronous programming paradigm and is classified as a type of programming language.

## Key Facts
- A synchronous programming language is a programming language for programming reactive systems. (Wikidata description)
- It is a manifestation of the synchronous programming paradigm and the programming_paradigm is listed as synchronous programming.
- It is a subclass of the broader class "programming language."
- Wikipedia title: "Synchronous programming language"; available in at least four Wikipedia language editions (de, en, uk, zh) and has a sitelink_count of 4.
- Common aliases include the Chinese forms 同步编程语言 and 同步編程語言.
- Freebase ID: /m/06w6_h (Freebase record dated 2013-10-28).
- Microsoft Academic ID (discontinued): 2778915259.
- Notable related languages include Esterel and Lustre (both with inception year 1980), and other related items listed are Céu and Argos.
- Topic's main category: Category:Synchronous programming languages.

## FAQs
### Q: What is a synchronous programming language used for?
A: It is used to program reactive systems — systems that continuously respond to external inputs or events. It embodies the synchronous programming paradigm.

### Q: What are examples of synchronous programming languages?
A: Examples listed in relation to this topic include Esterel and Lustre (both with inception year 1980), as well as Céu and Argos.

### Q: How does a synchronous programming language relate to the synchronous programming paradigm?
A: A synchronous programming language is a direct manifestation of the synchronous programming paradigm; the paradigm is the programming model the language implements.

### Q: Where can I find more encyclopedic information?
A: The topic has a Wikipedia article titled "Synchronous programming language" available in multiple languages (de, en, uk, zh) and is categorized under Category:Synchronous programming languages.

## Why It Matters
Synchronous programming languages matter because they provide a language-level approach to building reactive systems — systems that must continually observe inputs and produce timely responses. The classification and existence of dedicated languages signal a distinct programming paradigm focused on reactive behavior. Several historically important languages are associated with this class, including Esterel and Lustre (both noted with inception in 1980), indicating the paradigm's long-standing role in computing research and engineering. The field includes both well-established languages and newer entries (for example, Céu and Argos are listed as related items), showing ongoing activity. For practitioners and researchers concerned with reliably specifying systems that react to signals, events, or continuous inputs, synchronous programming languages provide a recognizable category of tools and techniques. The topic is represented across multiple Wikipedia language editions and has formal identifiers in data resources such as Freebase and Microsoft Academic (discontinued), enabling further discovery and metadata linking.

## Notable For
- Being a programming-language class specifically targeted at programming reactive systems.
- Manifesting the synchronous programming paradigm as its core programming model.
- Inclusion of historically significant languages such as Esterel and Lustre, both noted with inception in 1980.
- Presence of related and newer languages (e.g., Céu, Argos) indicating continued relevance.
- Representation across multiple Wikipedia languages and a dedicated category (Category:Synchronous programming languages).

## Body
### Definition
- A synchronous programming language is defined as a programming language for programming reactive systems.
- It is explicitly characterized as a manifestation of synchronous programming.

### Classification
- Subclass: programming language.
- Programming paradigm: synchronous programming.
- Topic's main category: Category:Synchronous programming languages.

### Examples and Related Languages
- Esterel — listed as a related synchronous programming language; inception: 1980; described (in related data) as a synchronous programming language for the development of complex reactive systems.
- Lustre — listed as a related programming language; inception: 1980.
- Céu — listed as a related synchronous programming language for reactive programming.
- Argos — listed as a related programming language.

### Identifiers and Metadata
- Wikipedia title: "Synchronous programming language".
- Wikipedia language editions indicated: German (de), English (en), Ukrainian (uk), Chinese (zh).
- Sitelink_count: 4.
- Aliases: 同步编程语言, 同步編程語言.
- Freebase ID: /m/06w6_h (Freebase record dated 2013-10-28).
- Microsoft Academic ID (discontinued): 2778915259.
- Wikidata short description: programming language for programming reactive systems.

### Parent and Context
- Parent class: programming language (class for communicating instructions to a machine).
- The parent programming language class has its own sitelink_count of 161.

## Schema Markup
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  "@type": "Thing",
  "name": "Synchronous programming language",
  "description": "A programming language for programming reactive systems and a manifestation of the synchronous programming paradigm.",
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## References

1. Freebase Data Dumps. 2013