Introduction - If you have any usage issues, please Google them yourself
AT89S52 in the system as the core, consistent with the measured temperature range chosen required DS18B20 single-bus digital temperature sensor, DS1302 serial clock chip, RT1602 LCD liquid crystal display to achieve the current date, time, week and temperature. When measuring the temperature exceeds a set upper and lower temperature limit to start alarm buzzer and indicator light. Show the stability of the temperature, the temperature values of two decimal digits in the part of the reservation.