#includereg51h #include intrinsh #includelcdh typedef unsigned char uint8; typedef unsigned int uint16; sbit k1=P3^3; 模式 sbit k2=P2^1; 加 sbit k3=P2^2; 减 sbit k6=P2^3; 电动机工作 sbit k5=P2^4; 继电器工作 sb

This code is written for the AT89C51 microcontroller and is used to control a temperature and humidity monitoring system. The system uses a DHT11 sensor to measure temperature and humidity, and a DS18B20 sensor to measure temperature. The system also includes a LCD display, LEDs, a buzzer, and a motor.

The code starts by including necessary libraries and defining the necessary pins for the system. It then defines various variables and arrays for storing data and strings.

The code also includes functions for delay, LCD initialization and writing, and DHT11 sensor initialization and data reading. It also includes functions for DS18B20 sensor initialization and data reading.

The main function initializes the system and checks if the DHT11 sensor is present. It then enters a loop where it checks for key presses, processes data, handles alarms, and updates the display. The loop also includes a delay of 1 second to ensure accurate timing.

Overall, this code provides the basic functionality for a temperature and humidity monitoring system using the AT89C51 microcontroller