Tothwolf wrote:
>
> On Sun, 3 Mar 2002, William Donzelli wrote:
>
> > I have a weird TTL here - a brand I have never seen. It is marked
> > FJH121/7410N witha 6920 datecode, and the logo is a diamond with an
> > "A" inside. Japanese, perhaps? I have seen that logo before...
> >
> > Ideas?
>
> Fujitsu? Hitachi? A good cross reference book should show who made 'FJH'
> parts. Somehow I doubt they were making 7400 series logic chips in 1969,
> so the 6920 number must be an in-house date code of some sort.
TTL came out in the 60's, but at BIG $$$ a chip they could only afford
it for
things like the space program that put man on the moon or large main
frames.
--
Ben Franchuk - Dawn * 12/24 bit cpu *
www.jetnet.ab.ca/users/bfranchuk/index.html
Received on Mon Mar 04 2002 - 12:43:48 GMT