15 May
2001
15 May
'01
4:14 a.m.
> When where the first 74xx ICs released / designed
?
> Especialy when where complex chips like 744x, 748x or
> 74181 first mentioned/available ?
> This may be a stuipd question, but I couldn't
find any
> information ... so all I have is my personal guess (~1970)
> and the oldesd TTL book Philip Belben could find (1972).
> Anyone more informed ?
I think you guys are going to have to use DTL. If TTL
was even around in
1970, it was probably pretty expensive at first.
You know why we need this info ...(big secret until some
day)... and in this context to expensive wasn't a real
issue.
Ciao
Hans
--
VCF Europa 3.0 am 27./28. April 2002 in Muenchen
http://www.vcfe.org/