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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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全国大学生电子设计大赛(2009)
2009年度中国全国大学生电子设计竞赛赛题-National Undergraduate Electronic Design Contest (2009)
- 2022-05-10 17:48:25下载
- 积分:1
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To do this for some friends to help, you can look at the reference
对要做这个的朋友们有些帮助,可以看看参考一下-To do this for some friends to help, you can look at the reference
- 2022-04-12 18:47:28下载
- 积分:1
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The paper gives the design of digital systems in the commonly used devices, and...
文中给出了在数字系统设计时常用的器件,和它们的参数希望对大家有所帮助-The paper gives the design of digital systems in the commonly used devices, and their parameters would like to help everyone
- 2022-05-08 13:16:36下载
- 积分:1
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微软的书,关于windows内存的管理。如果要写出高质量的驱动程序,强烈建议观看此书。...
微软的书,关于windows内存的管理。如果要写出高质量的驱动程序,强烈建议观看此书。
- 2022-01-24 12:34:38下载
- 积分:1
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该文档讲述我在电子设计大赛中的寻迹小车的研究与开发
该文档讲述我在电子设计大赛中的寻迹小车的研究与开发-I talk about the document in the electronic design contest in tracing the car
- 2023-01-17 04:35:04下载
- 积分:1
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ultrasonic sensorsch,pcb,code,documentation
ultrasonic sensorsch,pcb,code,documentation
- 2022-08-21 10:02:28下载
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这是一个xilinx相关的ug012 文档
这是一个xilinx相关的ug012 文档-This is a Xilinx ug012 related documents
- 2023-02-02 15:00:05下载
- 积分:1
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Principle usb, organize online, and very useful!
usb的原理,网上整理的,好不容易找到的,应该对很多人都很有用处!-Principle usb, organize online, and very useful!
- 2022-02-12 02:14:20下载
- 积分:1
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Huffman tree. tree with the right path length is the meaning of the various char...
哈夫曼树中,树的带权路径长度的含义是各个字符的码长与其出现的此时的乘积和,
也就是电文的代码总长,所以采用哈夫曼树构造的编码是一种能使电文代码总长最短的
不等长编码。-Huffman tree. tree with the right path length is the meaning of the various characters code length of time with the product and, is the message code chief Therefore, the tree structure used Huffman coding can be a code message from the chief of the shortest length coding.
- 2022-11-03 06:40:03下载
- 积分:1