0

Visit the Core Memory Room

CoreMemoryRoom

Great looking conference room art — framed core memories!

This was the industry standard for electronic memory before DRAM and SRAM and Flash. Data was stored in the magnetization, or not, of each ring. It is a non-volatile memory, and relatively immune to radiation and soft errors, much like MRAM today.

Many of the rectangular patches are 4K bits. The early ones were woven by hand, and over the years the iron ring sizes shrank and became tightly woven into an electromagnetic fabric.”

(Via Core Memory Room flickr set.)

CoreMemoryRoom Detail


Make a robot friend with Adafruit’s CRICKIT – A Creative Robotics & Interactive Construction Kit. It’s an add-on to our popular Circuit Playground Express, FEATHER and other platforms to make and program robots with CircuitPython, MakeCode, and Arduino. Start controlling motors, servos, solenoids. You also get signal pins, capacitive touch sensors, a NeoPixel driver and amplified speaker output. It complements & extends your boards so you can still use all the goodies on the microcontroller, now you have a robotics playground as well.

Join 7,500+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

CircuitPython in 2018 – Python on Microcontrollers is here!

Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Follow Adafruit on Instagram for top secret new products, behinds the scenes and more https://www.instagram.com/adafruit/


Maker Business — Electronics manufacturing is a burger of complexity

Wearables — Battery wash cycle

Electronics — How to make your own magnetic field probe!

Biohacking — The State of DNA Analysis in Three Mindmaps

Python for Microcontrollers — Getting Started with Adafruit Circuit Playground Express

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !



2 Comments

  1. Hey! There’s still data on that memory, provided it hasn’t been held up to a VHS Tape eraser or perhaps sat next to a (glass) computer monitor for the past 15 years…

    Mike Y
    Dallas, Texas

  2. Hi!

    You wrote: “Data was stored in the magnetization, or not, of each ring”. It is my understanding that all rings were magnetized, either in one direction or the other.

    BTW, your CAPTCHA is very unfriendly to color-blind people. I would normally use an ohmmeter for this kind of challenge, but my ohmmeter does not work on your website.

    Regards,

    Edgar.

Sorry, the comment form is closed at this time.