experimenting with lm35
I don´t know if you are using assembler or C , but any C compiler already has a library for LCD, so fisrt problem solved. For the LM35 you have many ways to implement it, the easier is to set the REF for ADC at PIC at a suitable level for linearity with LM35 output, i believe is 10mV/ºC or better yet use an ampop to rise the maximum temperatura you want to read at a 5V level and use direct ADC from PIC. An idea for code the code is very simple: take four ou five reading from the sensor, average them and then display it on the LCD, use a low refresh rate, the temperature change very slow, usually. I guess that 10 readings/second is enought. Hope it helps you, but never the less search code and ideas in forums for PIC (use google or this forum as a starting point).