Temperature Indicator using AT89C52

The circuit of the Temperature Indicator (using AT89C52) employs the voltage regulator IC 7805 to provide supply to different parts of the unit. The temperature sensor DS1621 senses the ambient temperature and the output of this chip is read by the micro-controller unit. The temperature data is compared with certain user-defined temperature values and processed inside the MCU as per the programand then sent to the LCD for display. Learning: Learn interfacing of temperature sensing IC DS1621 with the micro-controller input. Learn designing of the bridge rectifier. Learn interfacing of LCD module with AT89C52 Brand: Kits'n'spares, Marketed by: Kits'n'spares