File:Busicom calculator (Intel 4004 processor) - National Museum of Nature and Science, Tokyo - DSC07321.JPG - Wikimedia Commons
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Amazon.com: ChipScapes Artwork - The Intel 4004, The World's First Microprocessor - Awesome Christmas Present! : Handmade Products
![Schematic, Mask, and Die Shot of Intel's 4004 CPU from 1971 « Adafruit Industries – Makers, hackers, artists, designers and engineers! Schematic, Mask, and Die Shot of Intel's 4004 CPU from 1971 « Adafruit Industries – Makers, hackers, artists, designers and engineers!](https://cdn-blog.adafruit.com/uploads/2016/06/4004-composite-photo.jpg)