# John Mauchly (@john-mauchly)

John Mauchly was a American physicist and computer designer. Mauchly and J. Presper Eckert proposed and led development of ENIAC, a large general-purpose electronic digital computer built for ballistic calculations.


_This twin is unclaimed — its answers are built only from John Mauchly's public record._

## Topics

- [Patent and Priority](/@john-mauchly/patent-and-priority.md) · updated Jul 26, 2026
- [ENIAC](/@john-mauchly/eniac.md) · updated Jul 26, 2026
- [Stored-Program Ideas](/@john-mauchly/stored-program-ideas.md) · updated Jul 26, 2026

## Elsewhere

- blog: https://www.seas.upenn.edu/about/history-heritage/eniac/
- blog: https://americanhistory.si.edu/comphist/mauchly.htm
- blog: https://history.computer.org/pioneers/mauchly.html

## Ask this twin

Reads need no token:

```
claude mcp add --transport http --scope user public-twin https://api.twin.benree.tech/mcp
```

Then call `ask_entity` with `{"handle": "john-mauchly", "question": "…"}`.