Fw: Deck of IBM PLAYING CARDS GOES FOR $325
Roy J. Tellason
rtellason at blazenet.net
Sun Dec 18 14:57:25 CST 2005
On Sunday 18 December 2005 11:07 am, William Donzelli wrote:
> > I downloaded some motorola application notes from bitsavers.
> > Wow they sure had a lot of different types of TTL. I wonder how only
> > the 74xx
> > became the only TTL used today?
>
> "lot of different types" is exactly why. This "thinning" has happened with
> almost all logic families, but there are always exceptions - until about
> 10 years ago there were a couple of Motorola 4000 series TTL (!) parts
> still in use, as well as some Motorola 1600 series MECL III still useful.
Yeah, the C64 in at least some versions used the MC4044 as a part of the
clock generating circuitry...
--
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"
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Information is more dangerous than cannon to a society ruled by lies. --James
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