>> I want to display the temperature on an LCD.  I'm using a LM34CZ.  It
>> outputs 10mv per degree F.
>
>If you use an external ADC reference of 1.024 V (there are a lot of

However do remember that a PIC needs a ref of around 2.5V to work correctly.
So a reference of 2.048 would give 0.2F per bit, so 2.560V reference would
give 0.25F as your LSB. You should be able to set up a reference using a low
power LM317 and a couple of resistors to this voltage, if a suitable off the
shelf one is not available.

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