Fw: Deck of IBM PLAYING CARDS GOES FOR $325
Roy J. Tellason
rtellason at blazenet.net
Sun Dec 18 15:10:32 CST 2005
On Sunday 18 December 2005 02:21 pm, woodelf wrote:
> Allison wrote:
> >I can still find 74h, 74F, 74S, 74hct, 74c, 74hc nevermining what I
> >have on hand.
> >
> >It was interesting, useful and a PAIN. It sometimes made a huge differnce
> >if you subbed a S04 where there was an LS04.
>
> Stiill 74xx family of stuff! Well almost now that CMOS has taken over,
> we have a whole lot of custom tristate buffers and latches but not much
> more. Where do you find High Threshold Logic for Industrial Applications.
> What about your aging aircraft like the SST that used 70's componernts?
HTL? I seem to remember that being in the ECG cross-reference / replacement
guide... :-)
Want to get even more obscure? I worked on some machinery a while back (QUITE
a while back :-) that used some logic parts made by Amperex that they called
"Norbits" -- these things were HUGE compared to normal DIPs and all of them
had an odd number of pins, typically 17 though some had other numbers. I
might even still have some data on those around someplace.
--
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space, a critter that can
be killed but can't be tamed. --Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James
M Dakin
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