Build your own Apollo Guidance Computer
hilpert at cs.ubc.ca
Tue Dec 19 17:49:26 CST 2006
Jeff Walther wrote:
> Is there a guide somewhere to the different families of logic, such
> as RTL, TTL, LSTTL (never heard of that one) and CMOS? I was
> choosing some simple logic components for my IIfx SIMM project the
> other day and was somewhat bewildered by the choice of input/output
> levels. Also, some are Schmidt Triggered?
> My understanding extends to the idea that there are differences in
> how they (at what voltage) interpret the low and high states but
> beyond that, I'm ignorant.
> Anyway, before I go on a Google hunt (which will probably turn up all
> the surplus electronics suppliers and pricegrabber links first) does
> anyone already know of a nice educational source on the topic?
Most books or course material about digital logic from around the 70s tend to
have an overview of the major logic families,
for example "Integrated Circuits" by Robert G. Hibberd, published by
McGraw-Hill 1969, but produced by Texas Instruments.
IMHO, for earlier stuff, some of the nicest treatises on a specific logic
family are the first/introductory chapters of Fairchild data books from the
60s and 70s.
(...and don't forget DCTL, RCTL, DTL, CTL, ECL, PMOS, variations on all of the
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