ComputerVoltageSources

--- In ComputerVoltageSources@yahoogroups.com, "john mahoney"
<jmahoney@...> wrote:

> I like the way this is shaping up:
> Input attenuators, yes!

Mine are not input attenuators. They are 0 - 10 volt controls sourced
from a regulator and normalled to the inputs. With no input plug the
controls provide 0 to 10 volts. With an input plug, the controls are
disconnected and there is no attenuation

> A SpeakJet option would be fabulous

I haven't really done much with my SpeakJet. I did just buy the
TTS256 to play with. I do use a general pin to interface to the
SpeakJet. Interrupts have to be disabled to send data using the
serial commands. I also used the buffer half full flag instead of
speaking flag to speed things up by using the buffer. However, you
can't effectively put pauses in with program delays since you don't
know when the chip is speaking. You have to program in the pauses. In
retrospect I might have used the speaking flag but this all changes
when using the TTS256.

> Dave, I assume that you mean MOTM horizontal units when you refer to

1U and 2U. (BTW, the 0.5U MOTM format was recently born on the MOTM
list.

Yes

> > Just spent some time on the phone with John Loffink discussing ...
> What's a "phone"? ;-)

It took me a bit to remember how to dial long distance :)

> > I'm waiting for someone to suggest FOCAL. Anyone here that old?
> > Probably could still write it.
> Don't know that one. We had a FOCUS programmer in our department
> once, but I assume that it's something else.

Focal was a PDP-8 high level programming language where commands were
single character. Pretty efficient. ALso did PL/M for any old-timers
out there. See http://en.wikipedia.org/wiki/FOCAL

Dave