Not thaaaat simple. Resultant voltage in a resistor divider is not
thaaaat linear.
I made a computer program to search for the best *pseudo-linear* piece
of curve for a particular temperature range you need, based on a
resistor division combination. I will dig it and email to you directly.
Wagner

> Ercan Duran wrote:
>
> Hello.
>
> I'm trying to use a NTC thermistor with a 16F877 device.
> It's a 10K thermistor B Constant 25/50 C(K) = 4100.
> If I read resistant of the NTC, how can I calculate temperature in
> Celcius degree.?
>
> Thanks in advance.
>
> Ercan DURAN