# Concurrent Pascal

> programming language

**Wikidata**: [Q5159102](https://www.wikidata.org/wiki/Q5159102)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Concurrent_Pascal)  
**Source**: https://4ort.xyz/entity/concurrent-pascal

## Summary
Concurrent Pascal is a programming language designed by computer scientist Per Brinch Hansen in 1975. It is classified as a concurrent programming language, meaning it supports the simultaneous execution of multiple processes. The language is recognized in academic and library catalogs, such as the Library of Congress and Yale University.

## Key Facts
- **Inception:** The language was developed in **1975**.
- **Developer:** Created by **Per Brinch Hansen**, a Danish-American computer scientist, engineer, and university teacher.
- **Classification:** It is an instance of a **concurrent programming language**, a class of languages that support concurrent execution.
- **Typing Discipline:** According to structured data references, the language utilizes **dynamic typing**.
- **Creator Biography:** Per Brinch Hansen was born on November 13, 1938, and passed away in 2007. He held citizenship in the Kingdom of Denmark and later the United States (starting in 1992).
- **Identifiers:** The language is tracked under the Library of Congress Authority ID `sh85030755` and the Microsoft Academic ID `2777755785`.
- **Wikipedia Presence:** It has Wikipedia articles in English and Norwegian.

## FAQs
### Q: Who created Concurrent Pascal?
A: Concurrent Pascal was developed by Per Brinch Hansen, a prominent computer scientist and engineer who lived from 1938 to 2007.

### Q: What type of programming language is Concurrent Pascal?
A: It is a concurrent programming language, which is a type of language specifically designed to support the execution of multiple computations during overlapping time periods.

### Q: When was Concurrent Pascal developed?
A: The language was developed in 1975.

### Q: What are the typing characteristics of Concurrent Pascal?
A: According to its Wikipedia data properties, Concurrent Pascal is associated with dynamic typing.

## Why It Matters
Concurrent Pascal serves as a significant historical artifact in the field of computer science, specifically within the domain of concurrent programming. Developed in the mid-1970s by Per Brinch Hansen, it represents an effort to structure software development to handle parallel processes, a complex problem that continues to define modern computing.

The language is a key example of the evolution of programming paradigms, moving from sequential execution to models that could better utilize hardware capabilities for simultaneous tasks. Its existence highlights the work of Per Brinch Hansen, a noted figure in computer science history. Hansen's background as a computer scientist and engineer helped shape tools that addressed the fundamental challenges of process management and execution. While specific usage statistics are low in modern contexts (indicated by low site link counts), its inclusion in major academic and national library catalogs—such as the Library of Congress and the National Library of Israel—confirms its recognized status in the history of programming language design.

## Notable For
- **Pioneering Concurrency:** It is explicitly classified as a language supporting concurrent execution, distinguishing it from standard sequential programming languages of its era.
- **Authorship:** It is notable for being the creation of Per Brinch Hansen, a recognized computer scientist with dual heritage in Denmark and the United States.
- **Academic Recognition:** The language holds permanent identifiers in prestigious academic and bibliographic systems, including Yale University (Yale Lux ID) and the Library of Congress.
- **Historical Context:** Established in 1975, it marks a specific era in the development of structured programming and operating system design.

## Body

### Origins and Development
Concurrent Pascal was inceptioned in **1975**. It was created by **Per Brinch Hansen**, a computer scientist who made significant contributions to the field. Brinch Hansen, born on November 13, 1938, was a Danish engineer and university teacher who later became a United States citizen in 1992.

### Language Classification
The primary classification for Concurrent Pascal is that of a **concurrent programming language**. By definition, this class of language supports concurrent execution, allowing for the handling of multiple tasks effectively within the software architecture. In the hierarchy of programming languages, it is categorized strictly as a tool for this specific type of computation.

### Technical Attributes
According to structured data derived from Wikipedia, Concurrent Pascal is associated with **dynamic typing**. This attribute defines how the language processes variable types and data structures during execution.

### Cataloging and Identifiers
Concurrent Pascal is indexed in several major knowledge bases and library systems, underscoring its academic relevance:
- **Library of Congress Authority ID:** `sh85030755`
- **Yale Lux ID:** `concept/46edb6e7-d6f9-4a63-84ce-d6aa307f2229`
- **National Library of Israel J9u ID:** `987007553042905171`
- **Freebase ID:** `/m/02pmq0l`
- **Microsoft Academic ID:** `2777755785` (service discontinued)

The language maintains a presence on Wikipedia in both English (`en`) and Norwegian (`no`), though it has a relatively low site link count of 2, indicating a specialized or historical niche.

## References

1. [Source](https://github.com/JohnMarkOckerbloom/ftl/blob/master/data/wikimap)
2. National Library of Israel Names and Subjects Authority File