[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f0iz0V61BUIru9GqaI5XeKDJ7u22auWPwlcNK6XqEdHs":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2023-12-19 00:01:22",115841828,[8,9,10,11],"m×n","m+n","n","m",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},7,"85877ff3d6a9cce2f999f9aaf7098618","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fee39f8e689f4fd04e36bce8495627107.jpg","单片机技术及应用","45712da466804274973bdcc9436db235","键盘工作原理","m行×n列的矩阵式键盘占用()个I\u002FO口",[21,32,41,46,49,58,63],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],115841818,[25,26,27,28],"10","20","30","40","按键弹簧片的抖动时间一般小于()ms","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":30,"type":31},[],115841820,[36,37,38,39],"独立式","矩阵式","编码式","非编码式","电脑键盘属于()键盘",{"answer":42,"createTime":5,"id":43,"options":44,"question":45,"source":30,"type":31},[],115841823,[8,9,10,11],"m行×n列的矩阵式键盘包括()个按键",{"answer":47,"createTime":5,"id":6,"options":48,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":50,"createTime":51,"id":52,"options":53,"question":56,"source":30,"type":57},[],"2024-09-19 23:10:56",159731898,[54,55],"正确","错误","已知按键与单片机的连接如图所示,按键按下后,单片机P1.1接口读到高电平.\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Faa09bcd37a52e8f425817fe2dcdaef2e.png\">",3,{"answer":59,"createTime":51,"id":60,"options":61,"question":62,"source":30,"type":57},[],159731900,[54,55],"消除按键抖动只能通过软件消抖",{"answer":64,"createTime":65,"id":66,"options":67,"question":68,"source":30,"type":57},[],"2025-12-17 12:34:49",269660522,[54,55],"已知按键与单片机的连接如图所示,按键按下后,单片机P1.1接口读到高电平. \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Faa09bcd37a52e8f425817fe2dcdaef2e.png\">"]