[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fwSqA-3X-Z7oOfh4BjbtlAg3NOlSoq8FpTGdh51E8l_E":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":26,"type":27},[],"2024-06-11 20:33:17",150455003,[8,9,10,11],"0","1或0","不确定","1",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},20,"2d21d18866c66f5b5ced9edf210da9e0","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F11e590979864191716fdf2fada9cdb6d.png","数字电子技术","exam_125163993","第九章单元测试","集成单稳态触发器74LS121电路结构如下图,该触发器的输出\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fa10ec417b67c8c5935638c2e66d4a245.png\">端稳态为 .\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fcb2bb72d8d992207618a70e0c4b8cf8a.png\">‍",[21,28,37,46,55,64,73,82,89,92],{"answer":22,"createTime":5,"id":23,"options":24,"question":25,"source":26,"type":27},[],150454994,[10,8,11,9],"或非门构成的单稳态触发器电路如下,该单稳态触发器的稳态是 .‏\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F288d7fdfe822b87b82ed9558e1e38ad5.jpg\">","v1",0,{"answer":29,"createTime":5,"id":30,"options":31,"question":36,"source":26,"type":27},[],150454995,[32,33,34,35],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F3998315927578ee2904883781eb40936.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F472fff43688a1025da0317271ccdd0e0.png\">","B","都可以","集成单稳态触发器74LS121电路结构如下图,该触发器的输入端中 个为正脉冲触发信号.\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fcb2bb72d8d992207618a70e0c4b8cf8a.png\">",{"answer":38,"createTime":5,"id":39,"options":40,"question":45,"source":26,"type":27},[],150454996,[41,42,43,44],"仅小于信号脉宽","大于噪声脉宽,且小于信号脉宽","小于噪声脉宽,且大于信号脉宽·","仅大于噪声信号脉宽","一单稳态触发器消除噪声电路如下图,要求该单稳态触发器的暂稳态时间 .\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F141c947c319bb72be161254983a02323.jpg\">‎",{"answer":47,"createTime":5,"id":48,"options":49,"question":54,"source":26,"type":27},[],150454998,[50,51,52,53],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F0f4a358434468c568c87684ba7f36c25.jpg\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F2b8e93ca3b52134d0327a68c8633569b.jpg\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F319b0110a235728e463d22d8006ce3ef.jpg\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Feeae88d04225097b5afe5e53dd30bb4f.jpg\">","‍已知一施密特触发器电路结构如下,该施密特触发器的正向阈值电压计算式为 . ‏\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F1bfdc96d3bfad825bee29101748d5937.png\">",{"answer":56,"createTime":5,"id":57,"options":58,"question":63,"source":26,"type":27},[],150454999,[59,60,61,62],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ffb1667d7c3ec4b06154b8f5b6afb239d.jpg\">","0.7RC","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F368ec2f9b6c6916b1985208777b0b27f.jpg\">","1.4RC","一多谐振荡器电路如下,其振荡周期约为 .\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F80ae5dc28a6d53a14e1244b309bb6fa4.png\">‌",{"answer":65,"createTime":5,"id":66,"options":67,"question":72,"source":26,"type":27},[],150455000,[68,69,70,71],"与RC 以及正向阈值电压、负向阈值电压相关","与RC、正向阈值电压、负向阈值电压以及电源电压相关","仅与阈值电压相关","仅与RC 相关","由施密特触发器构成的多谐振荡器,其振荡周期与 因素相关‎",{"answer":74,"createTime":5,"id":75,"options":76,"question":81,"source":26,"type":27},[],150455001,[77,78,79,80],"低电平","高电平","负脉冲","正脉冲","或非门构成的单稳态触发器电路如下,该单稳态触发器的触发信号是 .‏‍\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F5e1bd2da58c533c96dbaa8d03b17354f.jpg\">‏",{"answer":83,"createTime":5,"id":84,"options":85,"question":88,"source":26,"type":27},[],150455002,[86,60,62,87],"0.7","1.4","或非门构成的单稳态触发器电路如下,该单稳态触发器的暂稳态维持时间为 .‏‍\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F7fc34ef7d8c75677cd959de45c3165d8.jpg\">‏",{"answer":90,"createTime":5,"id":6,"options":91,"question":19,"source":26,"type":27},[],[8,9,10,11],{"answer":93,"createTime":5,"id":94,"options":95,"question":100,"source":26,"type":27},[],150455004,[96,97,98,99],"0.7R1C1","0.7R1C2","0.7R2C1","0.7R2C2","某单稳态触发器延时电路如下图所示,该电路输出信号vo的上升沿相对于Vi的上升沿的延时时间约为 . ‌ \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F8bfaeb42db32ea31d645fb1d6c7c1e2d.png\">"]