This project is used to measure the temperature using LM35 analog sensor and ADC0804 Analog-to-Digital converter working in wide range of temperature from 0 c to 120 c and displaying this value on an LCD. It is also used to control the measured temperature by determining the maximum temperature the system can stand. If the measured temperature exceeds the maximum value, the system gives an alarm and switches on a cooler (fan) to decrease the temperature to the allowable temperature.

All this process is controlled digitally using a Atmel 8051 based microcontroller named AT89S52.