# ALGOL

> family of imperative computer programming languages

**Wikidata**: [Q188436](https://www.wikidata.org/wiki/Q188436)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/ALGOL)  
**Source**: https://4ort.xyz/entity/algol

## Summary
ALGOL (short for Algorithmic Language) is a family of imperative computer programming languages that served as a foundational framework for algorithmic development and structured programming. Developed in the late 1950s, it was designed by an international committee of computer scientists to provide a machine-independent method for communicating instructions to computers.

## Key Facts
- **Official Name:** Algorithmic Language.
- **Inception:** 1959 (with the first version, ALGOL 58, appearing in 1958).
- **Major Editions:** ALGOL 58 (1958), ALGOL 60 (1960), and ALGOL 68 (1968).
- **Classifications:** Imperative, procedural, and structured programming language.
- **Primary Designers:** A group including John Backus, Peter Naur, Friedrich L. Bauer, Alan Perlis, and Heinz Rutishauser.
- **Influenced By:** Fortran (1957).
- **Historical Competitors:** Fortran (scientific computing) and Lisp (functional programming).
- **Usage:** Primarily used for computer programming and the creation of algorithmic instructions.

## FAQs
### Q: What does the name ALGOL stand for?
A: ALGOL is an acronym for **ALGO**rithmic **L**anguage. It was officially designated as such to reflect its primary purpose as a language for describing computational algorithms.

### Q: Who were the main creators of ALGOL?
A: The language was designed by a diverse international team of mathematicians and computer scientists, including Turing Award winners John Backus, Peter Naur, and Alan Perlis, alongside European experts like Friedrich L. Bauer and Heinz Rutishauser.

### Q: How many versions of ALGOL were released?
A: There are three primary versions in the family: ALGOL 58, ALGOL 60, and ALGOL 68. Each iteration introduced new complexities and refinements to the language's structure.

### Q: Is ALGOL still relevant in computer science history?
A: Yes, ALGOL is considered a cornerstone of language design. It introduced structured programming concepts and served as the standard for describing algorithms in academic literature for decades.

## Why It Matters
ALGOL represents a pivotal shift in computer science, moving programming away from machine-specific instructions toward a standardized, algorithmic approach. Developed through a rare international collaboration during the Cold War era, it brought together American and European researchers to define a universal language for science and mathematics. 

The language's significance lies in its introduction of formal structures that are now taken for granted in modern software development. By establishing the paradigms of structured and procedural programming, ALGOL influenced nearly every imperative language that followed. It provided a rigorous framework for logic and scope, which allowed researchers to publish algorithms in a format that was readable by both humans and machines. While it faced stiff competition from Fortran in industrial applications and Lisp in the functional domain, ALGOL’s academic and theoretical impact remains unmatched, as it provided the essential blueprint for the evolution of high-level programming languages.

## Notable For
- **Structured Programming Pioneer:** One of the first languages to implement and formalize the structured programming paradigm.
- **International Design Committee:** Created by a multi-national group of experts from the United States, Germany, Denmark, Switzerland, and France.
- **Algorithmic Standard:** For many years, it was the standard language used to publish and communicate algorithms in technical and academic journals.
- **Foundational Influence:** Directly influenced by Fortran and served as a critical precursor to the development of subsequent procedural languages.

## Body

### Development and Design Team
The development of ALGOL was a collaborative effort involving several of the most prominent computer scientists of the 20th century. The design team included:
- **American members:** John Backus, Alan Perlis, Charles Katz, and Joseph Henry Wegstein.
- **European members:** Friedrich L. Bauer (Germany), Peter Naur (Denmark), Heinz Rutishauser (Switzerland), Klaus Samelson (Germany), Bernard Vauquois (France), and Hermann Bottenbruch (Germany).
- Later iterations, specifically ALGOL 68, involved other notable figures such as Adriaan van Wijngaarden.

### Evolution of the Language Family
The ALGOL family is defined by three major chronological releases:
- **ALGOL 58:** Originally known as IAL (International Algebraic Language), it was the first version released in 1958.
- **ALGOL 60:** Released in 1960, this version became the most influential iteration, widely adopted for academic research and algorithm description.
- **ALGOL 68:** A more complex and ambitious version released in 1968, which introduced advanced features but saw more limited adoption than its predecessor.

### Technical Classification
ALGOL is categorized as a high-level language that implements several key programming paradigms:
- **Imperative Programming:** It uses statements that change a program's state.
- **Procedural Programming:** It is based on the concept of "procedures" or "subroutines."
- **Structured Programming:** It utilizes block structures and clear logical flows.

### Historical Context and Competition
In the late 1950s and 1960s, ALGOL existed alongside other foundational languages. It was heavily influenced by **Fortran** (1957) and competed with it directly in the field of scientific and numerical computing. While Fortran gained more commercial traction, ALGOL was often preferred for its logical elegance. It also served as a structured alternative to **Lisp** (1958), which focused on functional programming and lambda calculus.

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## References

1. [Source](https://github.com/JohnMarkOckerbloom/ftl/blob/master/data/wikimap)
2. [Source](https://marketplace.sshopencloud.eu/tool-or-service/YKv47J)
3. Freebase Data Dumps. 2013
4. [Source](http://datos.bne.es/tema/XX541596.html)
5. YSO-Wikidata mapping project
6. National Library of Israel