//hardware board //A:soc芯片 //B:DDR//C:flash芯片//E:转网卡芯片//F:Codec芯片//G:放大器芯片//E:电源芯片//F:PCB//G:电阻//H:电容//I:电感
digraph hardware_board {A;B;C;D;E;F;G;H;I;K;L;M;}