[{"title":"( 2 个子文件 657KB ) 51开发板原理图+PCB+BOM清单+程序共享下载.7z","children":[{"title":"51开发板原理图+PCB+BOM清单+程序共享下载","children":[{"title":"51开发板电路、PCB.zip <span style='color:#111;'> 526.33KB </span>","children":null,"spread":false},{"title":"Test_Sep-New.rar <span style='color:#111;'> 145.83KB </span>","children":null,"spread":false}],"spread":true}],"spread":true}]