[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f6foPTfQHhb1zAz79pxkOGixlgl4x8QY7YcGHEH7aPC4":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":16,"related":17,"source":27,"type":28},[],"2025-12-28 06:49:24",290042172,[8,9,10,11],"-128~+128","0~65535","0~255","0或1",{"courseId":13,"courseImg":14,"courseName":15},"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","C51中的unsigned char型数据的值域是( )",[18,29,38,47,56,65,72,81,90,98],{"answer":19,"createTime":5,"id":20,"options":21,"question":26,"source":27,"type":28},[],290042163,[22,23,24,25],"低电平","高电平","不确定状态","无效状态","当单片机复位时,P0-P3口的状态为( )","v1",0,{"answer":30,"createTime":5,"id":31,"options":32,"question":37,"source":27,"type":28},[],290042164,[33,34,35,36],"RAM","ROM","寄存器","CPU","单片机应用程序一般存放在( )",{"answer":39,"createTime":5,"id":40,"options":41,"question":46,"source":27,"type":28},[],290042165,[42,43,44,45],"累加器","控制器","程序存储器","数据存储器","在单片机中,通常将一些中间计算结果存放在( )中",{"answer":48,"createTime":5,"id":49,"options":50,"question":55,"source":27,"type":28},[],290042166,[51,52,53,54],"0,0","0,1","1,0","1,1","为了使10H-17H作工作寄存器使用,RS1、RS0的取值为( )",{"answer":57,"createTime":5,"id":58,"options":59,"question":64,"source":27,"type":28},[],290042167,[60,61,62,63],"栈底单元","7FH","栈底单元地址加1","栈底单元地址减1","在堆栈操作中,当进栈数据全部弹出后,这时SP应指向( )",{"answer":66,"createTime":5,"id":67,"options":68,"question":71,"source":27,"type":28},[],290042168,[23,22,69,70],"高低电平均可","有效电平","若不使用51片内的存储器,EA引脚必须接( )",{"answer":73,"createTime":5,"id":74,"options":75,"question":80,"source":27,"type":28},[],290042169,[76,77,78,79],"源程序","汇编程序","目标程序","编译程序","单片机能直接运行的程序叫( )",{"answer":82,"createTime":5,"id":83,"options":84,"question":89,"source":27,"type":28},[],290042170,[85,86,87,88],"1","2","4","8","一个字节(BYTE)由( )位二进制数组成",{"answer":91,"createTime":5,"id":92,"options":93,"question":97,"source":27,"type":28},[],290042171,[94,95,35,96],"数据","函数","变量","C语言是由( )组成的",{"answer":99,"createTime":5,"id":6,"options":100,"question":16,"source":27,"type":28},[],[8,9,10,11]]