74ls192设计倒计时器
![这个倒计时电路怎么才能停下来?](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E83CC51B01D29E9F8E9AD3C9651ADACE5C6599CDE0B4DF2AC23F2EE8DE2DB62D3AE9C3014BE4517703454F5BCBD4BA80F0181AC37C53DAFA18CC3A924CB33A45202496B5E96969525E4D0C69BB1E80AA4A4)
这个倒计时电路怎么才能停下来?
图片尺寸680x521![倒计时计数器数码管不会动](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A735C5F302AD080A1AB2DB5C6A4D283A3DA2C9C44C4C8A48147AE5EAEE84628029BC5319AC8F945D8D640A476C58F49BF073CBFECB40146F797A118359FC69BADC72F579F60563BB9F8CE66864C7FBB4186)
倒计时计数器数码管不会动
图片尺寸569x486![99到0倒计时器,在clk的地方用555构成的振汤器输出1秒时基.](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A7384F4DD9E442525A28BB3D02C006F719349CE49EC308277601C8212CBE2DECE46A1901DE70D127F5A83C25786EBF283799C7556B4B8D7CB245479E4131C6E8FB882DBB08134606199BD245F9EB4171817)
99到0倒计时器,在clk的地方用555构成的振汤器输出1秒时基.
图片尺寸1024x803![基于51单片机电子秒表倒计时器proteus仿真程序原理图pcb数码管显示](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A73BBA6264D5C64373F589FD6EEFA8A3738A0F41AB890C00C5C53F82682171545356222DE3284B64B4BF952A2DFBBFF1F50CF6C82A77FE76B67F4A05994E8C6BF17EF5171A3ED88F31B74A7519F24A8F6CE)
基于51单片机电子秒表倒计时器proteus仿真程序原理图pcb数码管显示
图片尺寸1004x702![单片机, 请求大神按照我的要求帮我编一个99倒计时到0的汇编语言的](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A73D817A948648E37C4ABC380055802607012F64799DCF055D1528C04A55467A1DFF31F33219E440716A88478F820CDC94EC324414BC105AFD28AFCA31B5139905E3C74FD9422B9C5B54C95FE3B852E5B82)
单片机, 请求大神按照我的要求帮我编一个99倒计时到0的汇编语言的
图片尺寸1950x1260![倒计时电路怎么让后面秒表十位从6开始呢,大神在哪里](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E832E170C5D8AAA35F8BD71A1E789F3CFD00DA6B8A364401089833ED4F518CC8CC512CAEDAB86ED5BF72F00A6BE938FCFD9588CB27C0D1703199EAACBB7E5631D780AAE27D0842851D3E9054A94DEFDA20E)
倒计时电路怎么让后面秒表十位从6开始呢,大神在哪里
图片尺寸1091x423![数字电路倒计时毕业设计论文](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E83D53BF5844D12C2DC4779E57104EFA30DEAF00DDDF96DF5429C00E53DD5AD499F9C8D7715B3D7BBE2BF9D4E24846F8F06D4A593C01D6D10E7FFB0BDE456C4E4DE6D486BEC9A9F945090469E656A2C95D6)
数字电路倒计时毕业设计论文
图片尺寸269x479![用数字电路做12分钟倒计时计时器实验,现在的问题是到0的时候没有终止](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E83F3527C9112E50C8719EC3C0BEED9EEA33A9BF21FAFDB517354C032F98DA8454FB4605895AB1EF8E807609EEF5C860F4C2C5482AD13EEC789277CB9E93AF8A3F85437E34DC069242E6D35F53F8991C4C1)
用数字电路做12分钟倒计时计时器实验,现在的问题是到0的时候没有终止
图片尺寸1180x629![电子信息工程 课程设计(倒计时器.电子秒表)](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A73E46C411E776DB12D092A10E9F701704BF3BA5F47BEA1400698FE302799A3A9F96024664DFC4359648B84AF480593C52A609602BC6B2B8DCA29CE78ACAD148E8D1993207296EE1729D0B5780445D35D0C)
电子信息工程 课程设计(倒计时器.电子秒表)
图片尺寸997x700![单片机设计秒表倒计时](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A73F42702CDAA1604353037B71C4D24D52EAC82FABA3C23D31597BA8DB8191E8F3FE7649D269FB40FEAB54AB427B6452ABE7ACA8FCC490D4AB68611AF43EA99521D9E34CE4C762303F959DFE5F2E060B715)
单片机设计秒表倒计时
图片尺寸600x360![所有分类 高等教育 工学 数电课程设计-30秒倒计时器 高,低位74ls191n](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A73469C588E2C8311D986F36250C357965960B36291377CD87DCC377EBD5E8F4FCB0244533F0B2BAD6C7EBDC647BD30259CE3EDBFBDD29E42BA2B37B42ADE838440E5B6231392100840369CF720D1BCF5E8)
所有分类 高等教育 工学 数电课程设计-30秒倒计时器 高,低位74ls191n
图片尺寸582x471![基于ls的秒倒计时设计哈工大电工实验](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A73F273E1882DEA360F3C304FAB7CEAC2CE0EF5E2E47A7241FB51CC966BF827C120CCB8889A8B910B80959D4F77B1DEEB35B94A10A1114E3095DA70EB6181F0AA68B8B31462E9FFD968EF246161AAEBBEBB)
基于ls的秒倒计时设计哈工大电工实验
图片尺寸920x1302![电子信息工程 课程设计(倒计时器.电子秒表)](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E8375908F86463C306D1A134460B262542EB126C3DD67D6B1B674441DEA480A7B6F9F2E749C7DB097D3BACBAD7F6A7984C19184EFD35DA19C5D16BEB65AE8B07CC3E46F35D6654EEC63F026F3D8AE1BDF83)
电子信息工程 课程设计(倒计时器.电子秒表)
图片尺寸1062x740![用74ls192做的15s倒计时秒表,如何在0时停止计数 - 电路设计论坛](https://imgs.wantubizhi.com/img/A1A61BAA66193547F3A6DD7D8EE527E9B5D9EF3E890CC27C312A6AD003CFF0171BBB23D67AB181C7E04A6634235D08D7DBE33BA1771767331A7D80FFFB973FA37733D60E381653E7848361A1B799B4733E9ABF9A4A5A34117C0D66202412B683)
用74ls192做的15s倒计时秒表,如何在0时停止计数 - 电路设计论坛
图片尺寸697x437![课程设计报告书正文标准格式](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E83CAB207459B6147DC294DCC52BA2001C763565E5A9B0B4D908E9443C5E516005AB98BA5270B498C7F70A31E5766A2B183197294E2B94EB821B758D8B1986BCF2E0C81BDE3E67836CB29D6A9160F53BB64)
课程设计报告书正文标准格式
图片尺寸531x333![工程科技 电子/电路 24秒篮球倒计时数电实验报告 基于74ls192芯片和](https://imgs.wantubizhi.com/img/A1A61BAA66193547F3A6DD7D8EE527E9F33697C45D9469CCB80FBC0280BFC2D73CA8B40D3B9AE1A94BBC72D52F2DD9688EC67B7D765B904B65E4C97568DF68F7571342ADDC490FC11BD4B3A0990CD8BB26A8CCA5A280B1F596D9929EB80C3144)
工程科技 电子/电路 24秒篮球倒计时数电实验报告 基于74ls192芯片和
图片尺寸836x786![利用74ls192计数器芯片设计30s倒计时方案](https://imgs.wantubizhi.com/img/A1A61BAA66193547F3A6DD7D8EE527E9665F9B818A5CC6ED3F1380FA380E448F25F7606A74627DDB6924150D2371838BAE2C1DE78434F5FC887D0AAED99847C7510E0639004455FFB20B6E311184E9D117D828C5158E4F648974D5EE7B13BFC8)
利用74ls192计数器芯片设计30s倒计时方案
图片尺寸638x472![我想用两片74ls192实现倒计时30秒的功能,稍微有点问题](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E83D0E2693AF20E2BA2E2EE90595720E05622ECF7F5202733D27C9D5D8EBF8C919E012C612663EEE55ABB4DCC3188E17B0CA553E4217538E76D3E55720425AFF6E6061ED66ECAF81E3ABF58C48C273B3505)
我想用两片74ls192实现倒计时30秒的功能,稍微有点问题
图片尺寸903x425![此电路图下用74ls192代替74ls190实现60秒倒计时](https://imgs.wantubizhi.com/img/A1A61BAA66193547F3A6DD7D8EE527E910419EBB1A73CC71F77CFF58C0B3CDE56FCCB392498A917080A2A6AE796D5233FBC2EAA5AFD84C3E13D1DB1F18CF1CBC7B8F81B11849D96D7969267A2A1ACEA091EBED2ACF60D8EA0B120E43298752F0)
此电路图下用74ls192代替74ls190实现60秒倒计时
图片尺寸728x669![实验二60秒倒计时电路设计的实验报告](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A7396DCAA865FA8FF57D44565726F0FFC03D74F9AB8D34FE0AF69EBEA05937416EAF07CE4B8B455F4A4469A755639E8692B0ADF7C66387FC8DF5B360BAC92B33D79B118284D959DD77B3EEE6D151C9C4960)
实验二60秒倒计时电路设计的实验报告
图片尺寸528x243