# 1st-generation programming language

> binary machine language for programming first generation computers

**Wikidata**: [Q1289116](https://www.wikidata.org/wiki/Q1289116)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/First-generation_programming_language)  
**Source**: https://4ort.xyz/entity/1st-generation-programming-language

## Summary
A 1st-generation programming language (1GL) is a binary machine language used to program first-generation computers. As the most basic subclass of programming languages, it consists of instructions communicated directly to the machine in binary form. It serves as the precursor to the 2nd-generation programming language.

## Key Facts
*   **Definition:** Binary machine language used specifically for programming first-generation computers.
*   **Classification:** A subclass of "programming language," defined as a language for communicating instructions to a machine.
*   **Successor:** Followed by the 2nd-generation programming language (2GL).
*   **Aliases:** Also known as first-generation programming language, 1GL, L1G, 第一代语言, and 第一代編程語言.
*   **Distinction (vs 2GL):** Unlike 2nd-generation languages, which use mnemonics and are readable by programmers, 1GL is binary-based.
*   **Wikipedia Presence:** Registered as "First-generation programming language" with sitelinks across 10 languages including English, Chinese, and Arabic.

## FAQs
### Q: What is a 1st-generation programming language (1GL)?
A: It is a programming language classified as binary machine language used to instruct first-generation computers. It represents the earliest stage of programming language evolution.

### Q: What comes after a 1st-generation programming language?
A: The 1st-generation programming language is followed by the 2nd-generation programming language. The second generation differs by using mnemonics and being easily readable and written by programmers.

### Q: How does a 1st-generation language relate to standard programming languages?
A: It is a subclass of "programming language" generally, which is defined broadly as a language for communicating instructions to a machine.

## Why It Matters
The 1st-generation programming language represents the foundational layer of computer software development. As the primary method for communicating instructions to early computing machinery, it established the fundamental concept that machines could be guided by specific languages. While later generations introduced readability and mnemonics to aid human programmers, the 1GL defined the essential reality of computing: that machines operate based on binary instruction sets.

Its significance lies in its role as the "root" of the programming language family tree. By defining the machine's native tongue, 1GLs set the stage for the development of assemblers and higher-level languages (2GLs and beyond) that translate human logic into machine-executable code. Without the establishment of this binary machine language, the evolution of software engineering as a discipline would not have been possible. It serves as the historical and technical baseline for all subsequent programming paradigms.

## Notable For
*   **Binary Nature:** Being the only generation defined specifically as "binary machine language."
*   **Historical Primacy:** Serving as the first class of languages used to communicate instructions to a machine.
*   **Direct Hardware Interaction:** Existing as the raw instruction set for first-generation computers without the abstraction layers found in successors.
*   **Linguistic Variants:** Having recognized terminology in multiple major languages, including Chinese (第一代编程语言) and English.

## Body
### Definition and Classification
The **1st-generation programming language** (1GL) is the earliest class of programming language. It is strictly defined as a **binary machine language** utilized for programming **first-generation computers**. Within the hierarchy of computer science, it is a **subclass of** the broader entity "programming language," which encompasses any language designed for communicating instructions to a machine.

### Evolution and Successors
The 1GL predates the **2nd-generation programming language**. While the 1GL relies on raw binary, the 2nd-generation introduced features to make code more accessible to humans.
*   **1GL (Current Entity):** Binary machine language.
*   **2GL (Successor):** Easily readable and written by programmers; uses mnemonics; changed by assemblers.

### Terminology and Identifiers
The entity is recognized globally under various aliases and identifiers:
*   **Short Names:** 1GL, L1G.
*   **International Names:** 第一代语言, 第一代編程語言.
*   **Database IDs:**
    *   **Wikidata:** Associated with the description "binary machine language for programming first generation computers."
    *   **Freebase ID:** /m/0l16y.
    *   **Microsoft Academic ID:** 570499 (discontinued).

## References

1. Freebase Data Dumps. 2013
2. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)