A Hobbyist Builds a Working 16-Bit Magnetic Core Memory by Hand

16-bit fully functional DIY magnetic core memory

A DIY project shows a fully functional 16-bit magnetic core memory, the hand-woven storage that powered early computers, built from scratch. The Hacker News submission links to a video walkthrough of the build, where tiny ferrite rings and wires are threaded into a working array. Commenters dig into the craft behind it and how core memory reads and writes bits.

16-bit fully functional DIY magnetic core memory
  1. Geof25

    You can buy FRAM (Ferroelectric RAM) which are effectively the same thing just in smaller package. But I have seen them only about few kB. However the amount of R/W operations is effectively unlimited,

  2. amelius

    With the current DRAM shortages, this couldn't have come at a better time.

  3. JKCalhoun

    Core64 has been selling a kit like this for some time:

    https://www.core64.io/buy

    (I chatted with them at the VCFMW, Vintage Computer Festival Mid-Waste, and they are very cool.)

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2026-10-18