Digital circuits and analog devices

[Chuck Guzis]

Just about anyone who's ever worked in ECL (non-saturating logic) is
aware of this and doesn't need to be reminded by anyone.  The same for
anyone implementing logic using vacuum tubes.

In fact, the other aspect of digital logic is that it's a study of
transmission lines--and that's often voiced.

Really, any sort of analog-digital divide in thought must surely date
from the use of saturating logic in semiconductors.

So how far back do the citations go? Are they latecomers to the party?

--Chuck