On forgotten scope features:

Some time ago, I had a "hobby - grade" scope in the office fitted with
an Y output.
Very convenient, one could connect e.g. a counter, and use the scope
as a pre-amp.
I usually connected a simple amp with a speaker. It is amazing what an
"audio track" can reveal when doing measurements in a prototype.

When measuring datalines on a processor board, you could actually
*hear* the software processes going by, and hear the system hang after
a visible & audible glitch somewhere.

Also great in repairing audio systems - seeing and hearing a
measurement was extremely revealing. Incoherent waveforms might sound
very familiar.

My fancy Lecroy does not have this feature - I still miss
it...progress I guess.



--
- René