# ER 56

> Computer of Standard Elektrik Lorenz, Stuttgart, Germany

**Wikidata**: [Q134498537](https://www.wikidata.org/wiki/Q134498537)  
**Source**: https://4ort.xyz/entity/er-56

## Summary
ER 56 is a computer manufactured by Standard Elektrik Lorenz in Stuttgart, Germany, classified as a general-purpose device for performing arithmetic or logical operations.

## Key Facts
- Manufacturer: Standard Elektrik Lorenz
- Classification: computer, mainframe computer
- Location: Stuttgart, Germany
- Wikidata description: Computer of Standard Elektrik Lorenz, Stuttgart, Germany
- Sitelink count: 2
- Commons category: ER 56
- Wikipedia languages: commons, de
- Instance of: general-purpose device for performing arithmetic or logical operations
- Core components: software, computer hardware, central processing unit (CPU), graphics processing unit (GPU), computer keyboard, input-output device
- Charles Babbage, 1791-1871, is credited as the inventor
- First working machines appeared circa 1945
- Classified as an invention, machine, computing platform, IT system, information processor, and data terminal equipment
- Primarily uses electronics; mechanical energy is rare (mechanical computer)
- Dewey Decimal classes: 004, 621.39, 004.1
- Library of Congress subject heading: sh85029552

## FAQs
### Q: What is ER 56 specifically?
A: ER 56 is a computer manufactured by Standard Elektrik Lorenz in Stuttgart, Germany, classified as a general-purpose device for performing arithmetic or logical operations.

### Q: Who created this computer?
A: The manufacturer is Standard Elektrik Lorenz, with the foundational concept credited to English mathematician Charles Babbage (1791-1871).

### Q: What are its primary components?
A: The computer consists of software (non-tangible executable instructions), hardware (physical components), a CPU for executing instructions, a GPU for specialized graphics acceleration, a keyboard for text input, and input-output devices for interaction.

### Q: How does it differ from other computers?
A: ER 56 is classified as a mainframe computer manufactured by Standard Elektrik Lorenz, distinguishing it from personal computers and other computing platforms.

## Why It Matters
ER 56 represents a significant advancement in computing technology, embodying the general-purpose computing paradigm that has revolutionized modern society. Its development by Standard Elektrik Lorenz demonstrates the industrial application of computing technology, contributing to the digital transformation that underpins contemporary life. The machine's existence in the computing landscape illustrates the evolution from early computing concepts to practical electronic implementations that have enabled global communication, scientific discovery, and technological innovation.

## Notable For
- Manufacturer association with Standard Elektrik Lorenz, a German electronics company
- Classification as a mainframe computer, distinguishing it from smaller computing devices
- Historical significance as part of the computing era that began with practical electronic computers circa 1945
- Representation of the transition from mechanical computing to electronic computing
- Connection to the broader computer science discipline and digital economy

## Body
### Definition and Classification
ER 56 is formally defined as a general-purpose device for performing arithmetic or logical operations. It is subclassed as a machine, computing platform, IT system, information processor, and data terminal equipment. The computer operates by combining hardware (physical components) with software (non-tangible instructions) to process data and perform tasks ranging from simple calculations to complex simulations.

### Historical Context
ER 56 represents a specific implementation of computing technology developed by Standard Elektrik Lorenz in Stuttgart, Germany. The concept of general-purpose computing originated in the 19th century with Charles Babbage's designs, though practical electronic computers emerged circa 1945, marking the beginning of the computing era.

### Technical Architecture
The computer incorporates several core components:
- **Software**: Non-tangible executable instructions that guide the machine's operations
- **Hardware**: Physical components including the central processing unit (CPU) for instruction execution
- **GPU**: Specialized graphics accelerator for rendering visual information
- **Keyboard**: Input device for text and command entry
- **I/O devices**: Peripherals for data input and output operations

### Manufacturer and Production
ER 56 was manufactured by Standard Elektrik Lorenz, a German electronics company based in Stuttgart. The company played a significant role in the development and production of computing equipment during the mid-20th century.

### Cataloging and Identification
The computer carries several authoritative identifiers:
- GND identifier: 4070083-5
- Library of Congress subject heading: sh85029552
- Dewey Decimal classification: 004, 621.39, 004.1
- UNSPSC code: 43211500

### Related Computing Entities
ER 56 is part of the broader computing ecosystem that includes:
- 1990s IBM RS/6000 mainframe computers
- 1983 Belgian GEM 1000 system
- 2020 Chinese quantum prototype Jiuzhang
- 1975 IBM 3790 minicomputer

These related machines represent different eras and approaches to computing technology, illustrating the evolution of computing hardware and capabilities over time.