Hi,

IF you want "real same time" measurements ... simply use :

1) slow variatons : RC Low pass on ADC inputs to filter and "damp" a bit

2) quick variations : External LF398 ( i.e.) Sample and Hold circuits ...

3) Use two external ADCs

4) Use a differential OPA ...


And then use the ADC ... or read the ext ADCs.

remember The Pic can do ONE THING ONLY at a time .... but can drive many peripherals at the same time ....

Alain