Yamaha CS80

On Nov 7 2007, David Rogoff wrote:

>The Yamaha VCOs are linear (Hz/volt), which don't need the exponential
>converter found in more usual exponential VCOs (volts/octave) used in
>most synths.  Exponential converters are very temperature sensitive, so
>the CS80 is actually much more stable than synths like the Prophet 5,
>which always need some kind of auto-tuning circuits.

But doesn't a linear (Hz/Volt) synthesizer with a keyboard nearly always 
have an exponential convertor in it to convert the control voltages coming 
from the keyboard or voice assigner DAC (which are 'linear' in nature, as 
in 0 1 2 3) to exponential control voltages (as in 1 2 4 8) for the linear 
VCOs?