此为单片机控制锁相环MB1502锁到875M的频率，程序经过试验可以应用-This is the single-chip control MB1502 PLL locks to the frequency of 875M, the procedure can be applied to trial

专用LED显示芯片驱动,在源文件中直接加入那可使用(注意IO最配置为推换模式)-std LED driver code

经典的MB1504,MB1502通用C 结合keil编写，实测输出频率稳定可调可达到70Mhz—110Mhz。可作为DDS信号发生器的信号源等多种用途。-Classic MB1504, MB1502 combine keil write generic C, found a stable output frequency is adjustable up to 70Mhz-110Mhz. DDS signal generator can