AT89C51 Operation of the thermometer circuit DS1621 temperature sensor circuit using a digital thermometer will tell if I made​​. As a simple circuit operation is as follows; The numerical value obtained from the temperature sensor, microcontroller, with the help... Electronics Projects, AT89C51 DS1621 Thermometer Circuit "8051 example, avr project, keil example, microcontroller projects, " Date 2019/08/02