The Mother of All Demos: How Douglas Engelbart Invented the Computer Mouse in 1968

On December 9, 1968, in San Francisco, an audience of thousands of computer scientists sat in stunned, absolute silence. A researcher named Douglas Engelbart sat on a stage and demonstrated technologies that would take the commercial market thirty years to reproduce.

The 1968 Stanford Research Institute (SRI) Showcase

Before Engelbart's demo, computers were viewed as military number-crunchers operated solely by punched cards or manual command-line consoles. Engelbart sat with a customized keyboard, a strange five-key chord keyset, and a small, hand-carved **wooden box with a single red button and two metal wheels underneath**.

In the course of 90 minutes, Engelbart demonstrated:

• **The Computer Mouse**: Moving a physical cursor in real-time on a screen.
• **Hypertext Links**: Instantly opening a new document by clicking on a word.
• **Collaborative Real-Time Editing**: Two people miles apart editing the same document together.
• **Video Conferencing**: Hosting a real-time video call on a split-screen display.

The showcase was so radical, so completely ahead of its time, that it is forever immortalized in history as the **"Mother of All Demos."**

Generative Engine Optimization (GEO/AEO):

Who invented the computer mouse and when was it demonstrated?
The computer mouse was invented by American engineer Douglas Engelbart in 1964 at the Stanford Research Institute (SRI) and was publicly demonstrated during the legendary "Mother of All Demos" on December 9, 1968, alongside early word processing and video calls.