We show how to detect the temperature from an LM335 temperature sensor and output it on a 7 segment display with 2 digits. We use PIC16F690 MCU for this. It has 10 channel ADCs and 1024 division accuracy. Here we achieve 1 degree Centigrade accuracy and have a LED separately to show that the temperature is below zero.
Also we show how to multiplex 7 segment displays.