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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
- 2023-01-08 22:50:02下载
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这是实现三相异步电动机FOC的DSP开发源代码，希望对大家有用。平台是CCS2000，用的是TMSLF2407开发板...
这是实现三相异步电动机FOC的DSP开发源代码，希望对大家有用。平台是CCS2000，用的是TMSLF2407开发板-This is the realization of three-phase asynchronous motor FOC source code of the DSP development, in the hope that useful to everyone. Platform is CCS2000, using a development board TMSLF2407
- 2022-04-24 06:43:11下载
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Assembly Language Programming
*****汇编语言程序设计 源代码-Assembly Language Programming
- 2022-01-31 16:41:32下载
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还是汇编语言编的asm to vxd例子
还是汇编语言编的asm to vxd例子-or assembly language series asm example to vxd
- 2022-08-04 11:31:38下载
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moniqichexinhaodeng
发光二极管模拟汽车左转弯、右转弯、刹车、停靠、紧急情况信号灯(Light-emitting diode simulated car turn left, turn right, brake, parking, emergency lights)
- 2009-12-26 01:22:41下载
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1，消除按键的抖动问题 因为按键在闭合或断开过程中出现一段抖动期，主要由于按键的不稳定性引起的，这时会呈现一串页脉冲，时间的长短和开关的机械特性有关。一般在5m...
1，消除按键的抖动问题 因为按键在闭合或断开过程中出现一段抖动期，主要由于按键的不稳定性引起的，这时会呈现一串页脉冲，时间的长短和开关的机械特性有关。一般在5ms~10ms之间。为保证CPU对键的一次闭合作一次处理，必须去抖动。在键的稳定闭合或断开时读键的状态。 2，据EICE51原理图编写并调试一个键输入子程序，其功能为判断键盘上有无键输入，若有键入，作去抖动处理后，计算输入键的键号送累加器A。-eliminate jitter button issues as keys or disconnect the closure process for some jitter period, mainly due to the instability of the keys to the cause, then it will result in a bunch of pages pulse, the duration and switches on the mechanical properties. General ~ 10ms between 5ms. To ensure that the CPU in a pair of keys a close cooperation, must go jitter. The key to the stability closed or disconnected when reading the key state. 2, EICE51 schematics prepared and debug a key input subroutine, and its function of determining whether keys on the keyboard input, if typing for to handle jitter, the admission of Bond, Bond sent accumulator A.
- 2022-05-06 22:58:19下载
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程序
pca 主成分分析的matlab代码。主成分分析（Principal Component Analysis，PCA）， 是一种统计方法。通过正交变换将一组可能存在相关性的变量转换为一组线性不相关的变量，转换后的这组变量叫主成分。(PCA principal component analysis matlab code. Principal component analysis (Principal Component, Analysis, PCA) is a statistical method. Through orthogonal transform a group may be related to variable conversion is not related to a set of linear variables, this set of variables called principal component transformation.)
- 2018-03-30 20:51:31下载
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信息的基本原则，以及想要的核心结构…
dos 底层原理资料，和内核结构说明，想了解dos的编程的或许有用的哦-dos underlying principles of information, and the core structure that would like to know the dos programming, perhaps, useful Oh
- 2022-02-16 02:00:11下载
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Beginners program,how to control a robo using PC in Basic Language
Beginners program,how to control a robo using PC in Basic Language
- 2022-01-25 23:38:03下载
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five
字符和数据计算的实验
实验内容：先在屏幕上显示“input string,”,输入字符串 再显示“result=”。如为0~9的数字，则计数器加1，如为非数字，则直接显示，但不计数。(Characters and calculating data of experiments
Experiment content: first on the screen shows "input string,", the input string It is displayed "result =". As for 0 ~ 9 number, the counter add 1, such as is not a number, is directly display, but don t count.
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- 2011-12-15 10:45:50下载
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