25 Jul
2013
25 Jul
'13
5:52 p.m.
On 7/25/2013 4:53 PM, Chuck Guzis wrote:
On 07/25/2013 04:12 PM, Mark S Waterbury wrote:
I'm sure there are IBM people here who might have seen it, but I saw a
presentation on the design automation system IBM used internally, and
it would have been hard to turn out any board designed by IBM and made
to that standard that didn't have the characteristic grid pattern and
these cans for quite some time. They had a system I saw I'm thinking in
the early 70's @ McAuto, but the same sort of technology was used thru
as Chuck says for a long time in almost everything. At least the
Systems group would have used it.
I'd not be surprised if anything not using it would be a contract part.
I recall hearing that the fact that the terminal group made the IBM PC
product off the System's groups radar was a reason you didn't see a lot
of it in the PC hardware. They had their own methods there, and used
that method less.
jim
I have seen similar "tin cans" used in the IBM DisplayWriter, the 5100,
5110, 5120, the System/34 and System/36 models, and various IBM
System/370 equipment ... though usually on larger circuit boards
containing quite a few more "tin cans" than in this particular example.
The 5150 in at least some of the initial models, had boards that used
these. What comes to mind immediately is the floppy controller and
some of the early memory boards, as well as the "host connect board"
of the 3270 PC
http://en.wikipedia.org/wiki/File:IBM_PC_Original_5.25_Diskette_Drive_Adapt…
http://www.seasip.info/VintagePC/Images/hostconnect.jpg
So used into the mid-1980s at least.
--Chuck
