[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fjOFfPmUj6tz3kTHwubJJgurTFs3-1psmJkLE_bvCoaE":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":31,"type":32},[],"2024-06-25 14:18:36",155328800,[8,9,10,11],"4K字节","8K字节","16K字节","32K字节",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},140,"b90771ba39aa23633e760a92314f2074","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F3310115a82db216807be8665a174aace.jpg","单片机技术应用（学银在线）","exam_128785520","第二套题","8051单片机内部的ROM容量是多大呢",[21,33,42,51,60,69,78,87,96,105],{"answer":22,"createTime":23,"id":24,"options":25,"question":30,"source":31,"type":32},[],"2024-06-25 14:18:33",155328738,[26,27,28,29],"结束循环","结束本次循环","结束选择语句","结束整个程序","break语句用在switch case语句中的作用是什么呢","v1",0,{"answer":34,"createTime":23,"id":35,"options":36,"question":41,"source":31,"type":32},[],155328740,[37,38,39,40],"键盘扫描方式","单独读取","按行读取","按列读取","矩阵式键盘工作原理是()",{"answer":43,"createTime":23,"id":44,"options":45,"question":50,"source":31,"type":32},[],155328743,[46,47,48,49],"读锁存","读数据","读A累加器","读CPU","MCS-51的并行I\u002FO口信息有两种读取方法,一种是读引脚,还有一种是",{"answer":52,"createTime":23,"id":53,"options":54,"question":59,"source":31,"type":32},[],155328744,[55,56,57,58],"亮","灭","闪一下","一直闪","如果现在LED是点亮状态,请问执行下面一个语句后,LED的状态是什么? LED=~LED",{"answer":61,"createTime":23,"id":62,"options":63,"question":68,"source":31,"type":32},[],155328745,[64,65,66,67],"1","0","-1","出错","设有语句"int a=2,b=3,c=-2,d=2;",则逻辑表达式"a>0&&b&&c<0&&d>0"的值是",{"answer":70,"createTime":23,"id":71,"options":72,"question":77,"source":31,"type":32},[],155328748,[73,74,75,76],"RAM","ROM","cpu","pc","控制程序需要下载到单片机的(),才可以工作",{"answer":79,"createTime":23,"id":80,"options":81,"question":86,"source":31,"type":32},[],155328751,[82,83,84,85],"外部中断1","外部中断0","定时器1","定时器0","MCS-51单片机在同一级别里除串行口外,级别最低的中断源是",{"answer":88,"createTime":23,"id":89,"options":90,"question":95,"source":31,"type":32},[],155328753,[91,92,93,94],"选择工作寄存器区号","指示复位","选择定时器","选择工作方式","PSW中的RS1和RS0用来( )",{"answer":97,"createTime":23,"id":98,"options":99,"question":104,"source":31,"type":32},[],155328757,[100,101,102,103],"a>=10 or a<=0","a>=0|a<=10","a>=10 &&a<=0","a>=10‖a<=0","能正确表示逻辑关系:"a≥=10或a≤0"的C语言表达式是",{"answer":106,"createTime":23,"id":107,"options":108,"question":113,"source":31,"type":32},[],155328760,[109,110,111,112],"精确度高","速度快","成本低","能与数据处理结合","使用单片机实现在线控制的好处不包括"]