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"
-
Information is more dangerous than cannon to a society ruled by lies. --James 
M Dakin



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