数字频率计
数字频率计功能
（1）设计一个4位数字显示的十进制频率计，其测量范围为1MHz。
（2）测量值通过4个数码管显示以8421BCD码形式输出；
（3）采用记忆显示方式，即计数过程中不显示数据，待计数过程结束后，显示计数结果，并将此显示结果保持到下一次计数结束。显示时间应不小于1s。
（4）可通过开关实现量程控制，量程分10kHz、100kHz、1MHz三档(最大读数分别为9.999kHz、99.99kHz、999.9kHz)；
当输入信号的频率大于相应量程时，有溢出显示。
文件下载
资源详情
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13.66KB </span>","children":null,"spread":false},{"title":"test.cmp.bpm <span style='color:#111;'> 739B </span>","children":null,"spread":false},{"title":"test.hif <span style='color:#111;'> 732B </span>","children":null,"spread":false},{"title":"test.tan.qmsg <span style='color:#111;'> 72.14KB </span>","children":null,"spread":false},{"title":"test.map.bpm <span style='color:#111;'> 727B </span>","children":null,"spread":false},{"title":"test.sld_design_entry.sci <span style='color:#111;'> 153B </span>","children":null,"spread":false},{"title":"test_global_asgn_op.abo <span style='color:#111;'> 256.17KB </span>","children":null,"spread":false},{"title":"test.map_bb.hdb <span style='color:#111;'> 7.00KB </span>","children":null,"spread":false},{"title":"test.map.logdb <span style='color:#111;'> 4B </span>","children":null,"spread":false},{"title":"test.cmp.cdb <span style='color:#111;'> 56.18KB </span>","children":null,"spread":false},{"title":"prev_cmp_test.qmsg <span 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本站所有资源不代表本站的观点或立场，基于网友分享，根据中国法律《信息网络传播权保护条例》第二十二条之规定，若资源存在侵权或相关问题请联系本站客服人员，zhiweidada#qq.com，请把#换成@，本站将给予最大的支持与配合，做到及时反馈和处理。关于更多版权及免责申明参见 版权及免责申明