Linux

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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

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Slowly booting full Linux on the intel 4004 for fun, art, and absolutely no profit - Linux/4004 Dmitry.GR (dmitry.gr)

submitted 2 months ago by [email protected] to c/[email protected]

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TL;DR

I booted Debian Linux on a 4-bit intel microprocessor from 1971 - the first microprocessor in the world - the 4004. It is not fast, but it is a real Linux kernel with a Debian rootfs on a real board whose only CPU is a real intel 4004 from the 1970s. The video is sped up at variable rates to demonstrate this without boring you. The clock and calendar in the video are accurate. A constant-rate video is linked below.

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[–] [email protected] 19 points 2 months ago (1 children)

That’s a really good question and I had to know, the answer is kinda neat:

Intel's chip-naming scheme at that time used a four-digit number for each component. The first digit indicated the process technology used, the second digit indicated the generic function, and the last two digits specified the sequential number in the development of that component type. Using this convention, the chips would have been known as the 1302, 1105, 1507, and 1202. Faggin felt this would obscure the fact that they formed a coherent set, and decided to name them as the "4000 family".[24] The four chips were the following: the Intel 4001, a 256-byte 4-bit ROM; the Intel 4002, DRAM with four 20-nibble registers (total size 40 bytes); the Intel 4003, an I/O chip comprising a 10-bit static shift register with serial and parallel outputs; and the Intel 4004 CPU.

Why they jumped to 4000 from 1000 tho, I didn’t see.

[–] [email protected] 12 points 2 months ago

If I may venture a guess:

There are four of these chips (1302, 1105, 1507, 1202). Someone, trying to speed-talk, referred to them as the "four thousand-series chips" (instead of the "four, one-thousand-series chips"), and someone misheard or misunderstood that as the "4000-series chips". After several levels of this telephone game, marketing got involved, and they were just renamed into the 4000 series instead of redoing the marketing documents.

Just a guess.