说明：  采用以FPGA为核心的扫描控制电路，通过MCU提取的数据，经高频率的FPGA处理后送到驱动电路进行显示，既简化了软件编程，也保 证了大屏幕LED的刷新速率。
(To adopt a FPGA as the core of the scan control circuit, through the MCU data extracted by high-frequency FPGA treatment sent to the drive circuit to display not only simplify software programming, but also to ensure a large LED screen refresh rate.)