Tiny Tapeout 10 - An Enigma I Machine Made Out of Silicon

Welcome to my project submission for Tiny Tapeout 10 Tiny Tapeout SKY 25a, which will start fabrication at the end of Q3 2025. This will be a complete and functional model of the World War II era Enigma I cipher machine, occupying an area of 160um x 100um (around the surface area of a grain of sand!) in SkyWater's 0.13um silicon CMOS process.

A tale of two engimas
Original Enigma I: 32cm x 26cm. Image source1	Silicon version: 0.16mm x 0.1mm
	The silicon version has a footprint that's 5.2 million times smaller than the original!

Documentation

• Read the documentation for project
• See the interactive 3D viewer of the chip layout

What is Tiny Tapeout?

Tiny Tapeout is an educational project that aims to make it easier and cheaper than ever to get your digital and analog designs manufactured on a real chip.

To learn more and get started, visit https://tinytapeout.com.

Footnotes

1. https://www.smithsonianmag.com/smart-news/wwii-enigma-machine-found-flea-market-sells-51000-180964053/ ↩