带fpga单片机电路，很好用，大家一起-Microcontroller with fpga circuits, very good use, we take a look at

关于红外报警系统设计和时钟fpga设计、AT89C51单片机介绍和红外传感器论文-Design of infrared alarm system and clock FPGA design, AT89C51 microcontroller and infrared sensor