basic circuit for control temperature with lm35 temp sensor 

in this viden we can know temp getting up or down when temperature is turning up the green led turn on and when temperature turning up the red led will turn on
basic circuit for control temperature with lm35 temp sensor is video for electronics fan that has little bit information from electronic
part list:
lm35 temp sensor
variable ressistor 2k
ressistors:2 piece 470 1piece 10k
ic ua741
2 piece led red and green
power supply 5v 1A