[{"title":"( 3 个子文件 364KB ) 倒计时定时器A【74LS161_74LS192】Multisim仿真源文件_Multisim10以上.zip","children":[{"title":"使用说明更多帮助.html <span style='color:#111;'> 241B </span>","children":null,"spread":false},{"title":"Readme_download.txt <span style='color:#111;'> 1003B </span>","children":null,"spread":false},{"title":"倒计时定时器A【74LS161 74LS192】.ms10 <span style='color:#111;'> 374.21KB </span>","children":null,"spread":false}],"spread":true}]