Core skills

Heavy metal memories

The young ladies of asia lost their eyesight making these.

What does the thing in the middle do? Shoot laser beam.

Hi,
I have one of those, just finished knitting the core memory, haven't placed the other components yet.

NASA Apollo core memory, fascinating stuff.

Its what got us to the moon and back.

Start of an interesting quest, to fire up an original LEM guidance computer.

Tom... :slight_smile:

https://en.wikipedia.org/wiki/Magnetic-core_memory:
"For example, the Space Shuttle IBM AP-101B flight computers initially used core memory, which preserved the contents of memory even through the Challenger's disintegration and subsequent plunge into the sea in 1986.[27]"

Just another reason to appreciate this forum - fascinating subjects.

I notice that Arduino pins even with drivers don't run that matrix and wonder why?

If selecting a core changes it, how do you read?

Hi,
Lookup YouTube, some fascinating info.

Tom.. :slight_smile:

I lack bandwidth and have 2G/mo so no youtube please!

Hi,
This is some of the documentation with the shield;
http://www.corememoryshield.com/report.html

Tom.. :slight_smile:

Destructive read. Close timing. I like the part about using 1 wire to read 2 cores.

GoForSmoke:
Destructive read. Close timing. I like the part about using 1 wire to read 2 cores.

Yes, its all down to hardware, electronic and programming efficiency to do a specific job.
Tom.. :slight_smile:

I wonder if a latch could catch the induced pulse of a changed state? Read with input shift register and BJT?

GoForSmoke:
I wonder if a latch could catch the induced pulse of a changed state? Read with input shift register and BJT?

This is from the documentation about reading sense current.

But if you are making ROM type rope core;
http://qrp.gr/coreROM/

Tom.. :slight_smile: