In this article, the author aims to explain how to make a CPU using rocks and sand in a concise manner. The article emphasizes the importance of individual creativity and self-reliance in a world dominated by proprietary hardware and software. The process begins with obtaining silicon dioxide from rocks and purifying it to create pure silicon. The article then details the steps of creating a monocrystal of silicon, cutting it into thin slices, and doping the wafers with desired elements. Further steps involve applying photoresist, etching, and using various techniques to build up the desired features on the wafer. The article acknowledges that the process is oversimplified and many important steps have been omitted due to proprietary reasons. It encourages readers to use the discussed topics as search terms for further research. The author also cautions against attempting to make integrated circuits without proper safety measures. The article concludes by mentioning the possibility of amateur chip fabrication and recommends a YouTube channel for those interested in exploring the topic further.
https://blog.robertelder.org/how-to-make-a-cpu/