[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f_CwUowwYmye75d3Ha4wu26g25IIX_lWcJc5MYXBoexU":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":16,"related":17,"source":25,"type":26},[],"2026-01-08 16:32:46",306992109,[8,9,10,11],"计数溢出","启动时","设置工作方式时","赋初值时",{"courseId":13,"courseImg":14,"courseName":15},"764222cb1b85acfae08b7194ae6d5d73","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fefb29362893433509fc231a727d27953.png","单片机技术及应用","当T1 时, T1中断请求标志位TF1自动置1,向CPU申请中断",[18,27,36,45,54,57,66,75,84,93],{"answer":19,"createTime":5,"id":20,"options":21,"question":24,"source":25,"type":26},[],306992105,[22,23],"先输出全1","先写入全1","51单片机的并行I\u002FO接口作为输入接口读引脚状态时,原理上需要先做什么呢","v1",0,{"answer":28,"createTime":5,"id":29,"options":30,"question":35,"source":25,"type":26},[],306992106,[31,32,33,34],"4位","16位","8位","32位","8051单片机内部有两个 可编程定时器\u002F计数器",{"answer":37,"createTime":5,"id":38,"options":39,"question":44,"source":25,"type":26},[],306992107,[40,41,42,43],"P3","P1","P0","P2","单片机系统扩展时,作为高8位地址线的是哪一个I\u002FO端口",{"answer":46,"createTime":5,"id":47,"options":48,"question":53,"source":25,"type":26},[],306992108,[49,50,51,52],"EX1","ES","EA","ET1","总中断允许控制位是下面哪一个",{"answer":55,"createTime":5,"id":6,"options":56,"question":16,"source":25,"type":26},[],[8,9,10,11],{"answer":58,"createTime":5,"id":59,"options":60,"question":65,"source":25,"type":26},[],306992110,[61,62,63,64],"ALU","RAM","ROM","CPU","具有只读不能写,掉电后数据不会丢失的存储器是",{"answer":67,"createTime":5,"id":68,"options":69,"question":74,"source":25,"type":26},[],306992111,[70,71,72,73],"程序存储器","运算器","控制器","数据存储器","控制程序必须下载到单片机的 中,单片机才能工作",{"answer":76,"createTime":5,"id":77,"options":78,"question":83,"source":25,"type":26},[],306992112,[79,80,81,82],"振荡信号","机器周期","指令周期","状态时钟","单片机中最基本的时间单位是什么",{"answer":85,"createTime":5,"id":86,"options":87,"question":92,"source":25,"type":26},[],306992113,[88,89,90,91],"0003H","001BH","00013H","000BH","当CPU响应定时器T1的中断请求后,程序计数器PC的内容是",{"answer":94,"createTime":5,"id":95,"options":96,"question":97,"source":25,"type":26},[],306992114,[41,42,40,43],"作为输出端口时,下面哪一个端口需要外接上拉电阻才能有高电平输出呢"]