用DHT11检测环境温度湿度并实时显示。设置状态可以设置操作密码，温湿度参数调节并以FLASH方式改写到储存器中。单片机为LPC921-Environment temperature and humidity DHT11 detection and real-time display. Set the state can set the operation password, temperature and humidity parameters to adjust and rewrite the FLASH way to storage. MCU for LPC921