30 Nov
2014
30 Nov
'14
9:47 a.m.
On 11/30/2014 08:59 AM, Jon Elson wrote:
There was something I think was called stitch bond.
Wire that looked
very much like
wire-wrap wire, but probably had thinned insulation was ultrasonically
bonded to
flat posts on the board. I have some military-grade gear with flat pack
chips that
used this much like one would make wire-wrap cards. But, they were very
compact
and hardly thicker than a standard PC board.
This, I think. Back in the 60s it was advertised somewhat in trade
rags. My impression was that it saw use in military applications, but
that was just an impression. Apparently, very high writing density
could be achieved.
--Chuck