"Greg Mayman" bravely wrote to "William Kitchen" (28
Nov 04  09:38:00)
 --- on the heady topic of "STILL AROUND"

 -=> William Kitchen said to Greg Mayman
 -=> about "STILL AROUND" on 11-22-04  20:36.....

 WK> Low voltage differential signaling. It's used for high speed data in
 WK> the  hundreds of megabits/s to a couple of gigabits/s range.

 GM> Ah, yes, I understand what you're talking about. I haven't come
 GM> across that system in data transfer but it has a lot of parallels
 GM> in RF transmission.

 GM> I just noticed my unintentional pun on "parallels" 

There is one other parallel, that of ECL logic. It is used in frequency
counters for the prescaler divider and up into the gigahertz range too.
ECL uses small differential signals to drive the logic functions.
The interesting bit is that ECL doesn't use saturated switches like TTL.

 M*i*k*e

... Digital circuits are made from analog parts.
--- Blue Wave/DOS v2.30