30 Aug
2015
30 Aug
'15
12:15 p.m.
On Aug 30, 2015, at 2:34 PM, Chuck Guzis <cclist at
sydex.com> wrote:
...
I have heard of machine-fabricated core as well, but I thought that it only applied to
larger, slower bulk core store. One can certainly understand why plated-wire or thin-film
technologies were attractive.
Perhaps CDC's ECS? 125k (funny number that) words per memory bank.
Sigh. Another lost manual art. I can remember during
the 70s that the hot thing was to learn IC layout--the wives of a number of co-workers
were going to night courses for that.
I've never done that, though I have Carver Mead's textbook that describes how it
is done. I did do a PC board layout with red and blue tape on a light table, in 1977.
paul