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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
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AAA Logo是一款Logo设计软件。通过简单而强大的方式,设计专业的Logo,几分钟内就可以用于网页或者打印出来。内置60个模板,也可以自己定制模板。附带包...
AAA Logo是一款Logo设计软件。通过简单而强大的方式,设计专业的Logo,几分钟内就可以用于网页或者打印出来。内置60个模板,也可以自己定制模板。附带包含2000多个Logo对象和剪贴画的图库。所有内置Logo对象都是基于矢量的,可以轻易的缩放和旋转。也可以对任意单独对象应用不同的样式,得到几乎无限的对象和效果组合。 -AAA Logo is a Logo design software. Through simple and powerful way to design a professional Logo, can be used for web pages within minutes or print them out. Built-in 60 templates, you can also customize their own templates. Logo included that contains more than 2,000 objects and clip art gallery. Logo for all built-in objects are vector-based and can be easily scaled and rotated. For any single object can also apply a different style, are almost unlimited combinations of objects and effects.
- 2022-08-25 14:53:09下载
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This is collected in OPENCORE Wishbone bus and guide the development of note, wi...
这个是在OPENCORE上收集的wishbone总线的开发说明和指导,随着电子设计开源IP的大量应用,wishbone总线也越来越普及。-This is collected in OPENCORE Wishbone bus and guide the development of note, with the electronic design of a large number of open source IP applications, wishbone bus is also becoming increasingly popular.
- 2022-03-10 17:01:37下载
- 积分:1
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HT9200拨号芯片的使用,内有芯片说明和源代码,DTMF发码.
HT9200拨号芯片的使用,内有芯片说明和源代码,DTMF发码.-HT9200 using dial-up chip, a chip with descriptions and source code, the DTMF code.
- 2022-07-19 15:41:33下载
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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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针对同一场景可见光与红外图像的融合问题,提出了一种新的多尺度对比度塔图像融合方法. 该方法
利用对比度金字塔数据结构得到图像的多分辨序列,采用基于视觉特性的...
针对同一场景可见光与红外图像的融合问题,提出了一种新的多尺度对比度塔图像融合方法. 该方法
利用对比度金字塔数据结构得到图像的多分辨序列,采用基于视觉特性的融合算子在图像的相应各级上融
合源图像的细节,再通过金字塔逆变换重构出最终融合图像. 这种图像处理方法具自适应性,不随各自输入
图像的灰度特性而改变,同时增强了融合图像的对比度,产生了较好的视觉处理效果.-for the same scene of visible and infrared images of integration, proposed a new multi-scale tower contrast images. The use of contrast pyramid data structure Image multiresolution sequence, based on visual characteristics of the integration operator of the image corresponding levels of integration details of the source image, through the inverse pyramid transform eventually fused images. This image processing method has adaptability without their input image with the gray characteristics change, while enhancing the integration of the contrast of the image. have a better visual effect.
- 2022-01-26 04:02:38下载
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Electromagnetic Compatibility EMC design is to seek ways to make their own desig...
电磁兼容EMC设计的目的就是想办法使自己设计或生产的电子设备产生各种干扰信号的幅度符合别人的要求;同时还要想办法让自己设计或生产的电子设备在受到其它电子设备产生干扰的情况下还能正常工作。因此,EMC标准一般都是强制性的。-Electromagnetic Compatibility EMC design is to seek ways to make their own design or production of a variety of electronic equipment generated interference signal margin requirements in line with the others but also to find ways to help their own design or production of electronic equipment by the other electronic devices interfere with the circumstances can work properly. Therefore, EMC standards are generally mandatory.
- 2023-07-29 20:55:03下载
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本课题的目的就是研制适用于工业现场控制的嵌入式工业控制器,这对于提
高工业现场控制的实时性具有重要意义。本课题以嵌入式系统设计原理和工业控
制实际应用为...
本课题的目的就是研制适用于工业现场控制的嵌入式工业控制器,这对于提
高工业现场控制的实时性具有重要意义。本课题以嵌入式系统设计原理和工业控
制实际应用为核心,从理论上和技术方法上开展了一系列研究。主要工作有:
1全面系统地概述了嵌入式系统的发展过程和分类,及其在各个领域
内的应用,以及嵌入式系统的发展方向
2基于嵌入式系统设计原理的嵌入式工业控制器的设计的总体方案,
从硬件和软件两个方面讲述了嵌入式工业控制器的设计思想和方
法,及其可行性的论证
3嵌入式工业控制器硬件平台的设计与调试,着重叙述了硬件平台的
整体设计方案,包括各个设计模块的选型与接口电路的设计
4嵌入式工业控制器所采用的操作系统的移植与调试,详细讲叙了
u C/OS-II实时操作系统在基于AT9I M40800的嵌入式工业控制器
硬件平台上的移植过程及注意事项
5在后继的工作中,我们还要在实时嵌入式操作系统的基础上完成对
操作系统的扩展以及对各个模块的驱动。
- 2022-01-25 22:11:10下载
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一个关于开放性的演讲,我会帮助人们
a lecture about open cl that I thing ll help people
- 2023-07-12 14:55:03下载
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关于使用systemc语言进行建模的内容
关于使用systemc语言进行建模的内容-Systemc language modeling on the use of the contents of
- 2023-01-18 13:50:04下载
- 积分:1