说明： 基于51单片机的数字直流电压表相关材料，内容有原理图，仿真文件，论文材料，程序源码等。(The related materials of digital DC voltmeter based on 51 single chip computer include schematic simulation files, paper materials, program source code, etc.)
说明： 51单片机控制智能温控风扇，多档调节，pwd调速。包含源码和电路图(51 single chip computer control intelligent temperature control fan, multi-stage adjustment, PWD speed regulation. Contains source code and circuit diagrams)
