[PIC] Temperature and Humidity Indicator

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I am a new learner.

I have built temperature and Humidity indicator using PIC 16F877a (LM35 +SH20).

I Have following two problems.

1) If I program to read only Temperature or only Humidity it shows correct.
But when I select Temperature + Humidity - Both shows erratic reading ( RA1 and RA2).
Request to suggest solution.
2) When I am reading Temperature it hunts 27 - 27.5 - 29 - 27.5 etc - How to make it stable

Thanks

Vijay
 

I don't know what SH20 is. SHT20 is a digital sensor with I2C interface. In so far it's not clear how you connected the sensor. Please clarify, preferably show a schematic.
 

Post your code. Mention which Compiler and what crystal frequency you are using.
 

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