[{"title":"(3个子文件4.04MB)基于51单片机的智能抢答器+C源码+原理图+PCB","children":[{"title":"智能抢答器5程序.c <span style='color:#111;'>13.43KB</span>","children":null,"spread":false},{"title":"智能抢答器原理图3.pdf <span style='color:#111;'>224.39KB</span>","children":null,"spread":false},{"title":"智能抢答器PCB.PcbDoc <span style='color:#111;'>11.31MB</span>","children":null,"spread":false}],"spread":true}]