51 Microcontroller Course Design—A Desktop Clock That Monitors Temperature and Humidity

This system is an electronic clock system designed to monitor temperature and humidity parameters in real time using the AT89C52 microcontroller.
The system can monitor the ambient temperature and humidity in real time and display the data on a screen. It compares the data to upper temperature and humidity limits; if the limits are exceeded, a buzzer sounds and an LED flashes. The DS1302 microcontroller displays the real-time time on the screen, and a button switches to timer mode. A separate button sets the countdown, and the buzzer sounds when the countdown ends.
Using the 51 series microcontroller as the computing core, a simple system design can basically meet the system design requirements. The system should accurately display temperature and humidity data on an OLED screen, with a humidity limit of 70% and a temperature limit of 50%, triggering an alarm when these limits are exceeded.