It may have been primitive, but it was exceptionally reliable -
used in many spacecraft and rockets and their payloads - Pioneers
10 and 11 and Saturn V come to mind.
Magnetic bubbles are completely different technology.
Donald.
On 12/17/24 07:15, wn4isx via groups.io
wrote:
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I just threw away a 1k (1024) magnetic core plane driven by
TTL. It dated from 1968. The college of engineering was tossing
it in 1976 and I thought it might be useful. Wired it to a
KIM-2.? It worked by what a headache
The Chyron (TV charater generator) at the university medica
center had 5 core planes, stacked, they were 2 feet by 2 feet
and 3k each for a total of 9k.
The 8" floppy drive was so stupid if the system issued a
command change from track 20 to track 21 it backed the haed all
the way back to track zero then stepped forward 21 tracks.
sounded like a supressed maching gun. We replaced it with a dumb
PC [original 5 slot IBM PC] with a 5meg hard file and the
production people were so happy they wanted to have it's babies.
Somewhere i have several 4" squares I cut from one of the
magnetic planes.
Core plane worked amazing well given how primative it was.
I hope it's not coming back.
We had a demonstration of TI's magenetic bubble
memory....that crashed everytime the engineer tried ti rurn the
program.
Magnets belong in compasses and children's toys,not computer
memory!