CPU design at the gate level

From: Richard Erlacher <edick_at_idcomm.com>
Date: Wed Oct 31 16:59:55 2001

Simple circuits in DTL were cheap and easy to manufacture. As the speed and
density went up, the cost went up, but not so much with TTL as with DTL.
Apparently there were lots of reasons for this, but I never had much interest in
DTL, so I have to plead ignorance. My early TTL databooks are dated in the
early '70's, and DTL came before then.


----- Original Message -----
From: "John Allain" <allain_at_panix.com>
To: <classiccmp_at_classiccmp.org>
Sent: Wednesday, October 31, 2001 3:37 PM
Subject: Re: CPU design at the gate level

> Chuck said:
> > DTL -> TTL -> LSI -> FPGA
> Sure I'm familliar with the concept, but only from
> an overview standpoint. Just what is it with DTL vs
> TTL anyway? Why didn't they use TTL from the
> start? Was it a eureka genius thing or did it take
> advanced transistors to make it possible?
> A quick answer would suffice, we got too much
> bandwith as it is.
> John A (software guy)
> This question for me dates back to the early 80's
Received on Wed Oct 31 2001 - 16:59:55 GMT

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