用C编写的湿度采集显示程序，具体采用89C52直接检测频率信号，然后输出。-Written using C Humidity acquisition and display program, the specific frequency signal with direct detection of 89C52, and then output.

B/s 一号店商城订单采集系统.定时写入SQL2005数据库。-B/s One shop orders acquisition system