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Linux boots in 4,76 days on Intel 4004


Historic 4-bit microprocessor from 1971 can execute Linux commands over days or weeks.

Hardware hacker Dmitry Grinberg recently achieved what might sound impossible: booting Linux on the Intel 4004, the world's first commercial microprocessor. Grinberg's emulator makes clever use of lookup tables and other tricks to squeeze maximum performance out of the primitive CPU. For those interested in vintage computing or extreme Linux implementations, it's a fascinating look at what's possible with 1970s technology and a lot of clever engineering.

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