# Douglas Engelbart's prototype mouse

> mouse used in the Mother of All Demos

**Wikidata**: [Q131411226](https://www.wikidata.org/wiki/Q131411226)  
**Source**: https://4ort.xyz/entity/douglas-engelbart-s-prototype-mouse

## Summary
Douglas Engelbart's prototype mouse is the original hand-held pointing device invented in 1963 to translate physical motion into on-screen cursor movement. Constructed from wood by SRI International, this specific artifact is historically defined by its central role in "The Mother of All Demos" in 1968. It serves as the foundational instance of the broader "computer mouse" class, establishing the concept of real-time graphical interaction.

## Key Facts
- **Inception:** 1963
- **Inventor:** Douglas Engelbart (with contributions from William English)
- **Manufacturer:** SRI International
- **Material:** Wood
- **Significant Event:** Used in "The Mother of All Demos" (1968)
- **Patent:** Associated with key early mouse technology patent US 3987685
- **Classification:** Instance of *computer mouse*; Subclass of *pointing device* and *input device*
- **Aliases:** mouse of all demos, first mouse, erste Personal Computer Maus

## FAQs
### What was the prototype used for?
The device was designed as a hand-held input peripheral to move a pointer on a computer display, allowing users to navigate and manipulate on-screen elements directly.

### Who created Douglas Engelbart's prototype mouse?
It was invented by Douglas Engelbart, with assistance from William English, while working at SRI International.

### When was the prototype invented and demonstrated?
The device was built in 1963 and famously showcased five years later during the 1968 event known as "The Mother of All Demos."

### What materials were used to build the prototype?
Unlike modern plastic devices, this prototype was constructed using a wood shell.

## Why It Matters
Douglas Engelbart's prototype mouse represents the genesis of modern human-computer interaction. Before this device, computing was largely text-based and reliant on keyboard commands or punch cards, which limited the ability to interact with graphical elements intuitively. This prototype solved the problem of spatial input, providing a precise mechanism to control a graphical user interface (GUI).

Its successful operation during "The Mother of All Demos" proved that point-and-click paradigms were viable, paving the way for the development of modern operating systems, design software, and interactive applications. By transitioning the user experience from abstract command lines to direct manipulation of objects, the prototype laid the essential groundwork for the personal computer revolution.

## Notable For
- **Being the first computer mouse:** It established the technical and functional definition for all subsequent pointing devices.
- **The "Mother of All Demos":** The prototype is inextricably linked to this 1968 technical demonstration, which debuted real-time interactive computing capabilities.
- **Wooden construction:** The device is distinct for its raw, hand-crafted aesthetic (wooden shell), contrasting with the manufactured peripherals that followed.
- **Foundational Patent:** It is the physical manifestation of the concepts protected under U.S. Patent 3987685.

## Body

### History and Development
The device was created in 1963 by Douglas Engelbart, with engineering contributions from William English. It was developed at SRI International (Stanford Research Institute) as part of Engelbart's research into augmenting human intellect. While the general concept of a "computer mouse" was born here, this specific prototype was the working proof-of-concept that validated the technology.

The device remained the primary demonstration tool until the "Mother of All Demos" in 1968. This event, formally known as "A Research Center for Augmenting Human Intellect," utilized this prototype to showcase a fully functional oN-Line System (NLS), including hypertext, object addressing, and dynamic file linking.

### Technical Specifications and Design
Unlike modern optical or wireless devices, the prototype was a mechanical device housed in a carved wood shell. As an early instance of the "computer mouse" class, it translated physical hand movements into cursor coordinates on a screen.

- **Classification:** It is strictly defined as an *input device* and a *pointing device*.
- **Components:** While specific internal schematics are detailed in patent US 3987685, the device is generally characterized by its wooden chassis and the ability to detect two-dimensional motion.
- **Manufacturing:** The device was built by SRI International.

### Context within Computer Hardware
This entity is the specific origin point for the broader category of the "computer mouse." While the general category now includes diverse variants such as optical mice, wireless models, trackpads, and gaming peripherals, Engelbart's prototype represents the "ball mouse" or mechanical era's ancestor (though the source notes it was a prototype, the "ball mouse" is cited as a major type that followed).

It serves as the parent instance for the technology, distinct from later evolutions like the footmouse or the specialized ultrasonic 5-button mouse developed years later.

### Cultural and Technological Legacy
The prototype's usage in 1968 changed the trajectory of computer hardware from specialized scientific tools to accessible personal devices. By enabling the graphical user interface (GUI), the prototype shifted software design paradigms toward "what you see is what you get" (WYSIWYG) interactions.

It is preserved in history as the "mouse of all demos," often cited in library and information science classifications (e.g., Library of Congress sh93009624) as a pivotal piece of computer hardware history.