dave.g4ugm at gmail.com
Sun Aug 30 08:28:28 CDT 2015
> -----Original Message-----
> From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Paul
> Sent: 30 August 2015 13:20
> To: General Discussion: On-Topic and Off-Topic Posts
> <cctalk at classiccmp.org>
> Subject: Re: IBM 1620
> > On Aug 30, 2015, at 4:49 AM, Dave G4UGM <dave.g4ugm at gmail.com>
> > ...
> >> IBM had special machines to
> >> position and thread them.
> >> http://ibm-1401.info/IBMCoreArraysIEEEMagnetics1969.pdf
> Interesting. I remember learning about the processes DEC used. No fancy
> machines, just a flat plate jig with slots to hold the cores in their
> position, and nimble-fingered Oriental ladies to thread the wire through
> core planes by hand. Seemed sensible to me; that is the process I was
> thinking about for this case.
Surely DEC used machine threaded cores later on. There is a 16k (I think)
DEC board in the Museum of Science and Industry in Manchester that must be
machine woven as you can't see the individual cores without heavy
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