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在电子技术中，频率是最基本的参数之一，又与许多电参量的测量方案、测量结果都有十分密切的关系，因此频率的测量就显得更为重要。测量频率的方法有多种,其中电子计数器测...
在电子技术中，频率是最基本的参数之一，又与许多电参量的测量方案、测量结果都有十分密切的关系，因此频率的测量就显得更为重要。测量频率的方法有多种,其中电子计数器测量频率具有精度高、使用方便、测量迅速，以及便于实现测量过程自动化等优点，是频率测量的重要手段之一。在本次毕业设计中我们选择使用单片机来制作数字频率计，并在实际制作中采用了直接测频法。利用延时产生的时基门控信号来控制闸门，通过在单位时间内计数器记录下的脉冲个数计算出输入信号的频率，最终送入LCD中显示。这样制作出来的频率计不仅可以满足设计题目的参数要求，而且具有了单片机的稳定性和成熟性，且控制能力强，是一种低成本，高可靠的设计方案。-In electronic technology, the frequency is one of the most basic parameters, but also with a number of electrical parameters of the measurement program, the measurement results have a very close relationship between the frequency of measurement, therefore it is even more important. Measurement of the frequency of a number of means, electronic measurement of the frequency counter with high precision, easy to use, rapid measurement, and measurement is easy to realize the advantages of process automation is an important means of measuring the frequency of one. Graduates in this design we have chosen to make use of single-chip digital frequency meter, and used in the actual production of a direct
- 2022-03-22 04:26:27下载
- 积分：1
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电源产品GUIDE
想设计电源的朋友可以参考的手册
电源产品GUIDE
想设计电源的朋友可以参考的手册-Power products GUIDE friends would like to design power can refer to the manual
- 2022-07-07 02:50:42下载
- 积分：1
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mina的重要核心可自由下载此源码
mina的重要核心可自由下载此源码 -an important core mina free download this source
- 2022-01-25 21:02:53下载
- 积分：1
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测验
Quiz-type game shows are increasingly
becoming popular on television
these days. In such games,
fastest finger first indicators (FFFIs) are
used to test the player’s reaction time.
The player’s designated number is displayed
with an audio alarm when the
player presses his entry button.
- 2023-01-24 19:10:04下载
- 积分：1
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非常详细的Wince BSP 开发入门资料, 对于有兴趣的人很有帮助!
非常详细的Wince BSP 开发入门资料, 对于有兴趣的人很有帮助!-Wince BSP developed a very detailed introductory information helpful for those who are interested!
- 2022-09-07 13:00:03下载
- 积分：1
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4G LTE 物理层相关协议 TS36.2
4G LTE 物理层相关协议 TS36.2-4G LTE physical layer related agreements TS36.2
- 2022-07-20 03:13:00下载
- 积分：1
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一个带有子系统的PID仿真，基于Matlab Simulink
一个带有子系统的PID仿真，基于Matlab Simulink-Simulation of PID controller, based on Matlab Simulink
- 2022-02-11 20:58:14下载
- 积分：1
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3.3v开关稳压型ldo. 比较常用的简单电源 方案
3.3v开关稳压型ldo. 比较常用的简单电源 方案-3.3v type ldo. The commonest simple power program
- 2023-04-02 09:55:04下载
- 积分：1
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基于Multigen 的虚拟地质环境构建技术探讨
基于Multigen 的虚拟地质环境构建技术探讨-Based on the geological environment of virtual Multigen Construction Technology
- 2023-04-24 07:40:04下载
- 积分：1
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EMC desing rule in NEC design
EMC desing rule in NEC design
- 2022-02-12 23:51:18下载
- 积分：1
