hello Kinza,link for

[dagakshay]

hello Kinza,

link for temperature sensor (julio has already give that)

http://www.engineersgarage.com/microcontroller/8051projects/celsius-fahrenheit-scale-thermometer-AT89C51-circuit

 

link for seven segment

 

what is seven segment

http://www.engineersgarage.com/electronic-components/7-segment-display

 

seven segment interfacing with 8051

http://www.engineersgarage.com/microcontroller/8051projects/interface-seven-segment-AT89C51-circuit