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Description: ekjwr fhekwa hfdsgfdhblkfdsjngldkfsg
fdkjlssjgl fkdshgkfldlds-ekjwr fhekwa hfdsgfdhblkfdsjngldkfsg fd kjlssjgl fkdshgkfldlds
Platform: |
Size: 53248 |
Author: 风格 |
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Description: 数字选台收音机
注意：
（1）遥控发射芯片用TC9012/TC9243
经常用到的还有UPD6121和LC7461，它们的不同只处在于引导码的时间不同或者数据位的个数不同，接受原理基本一样。将本程序的相关位置修改就可以通用。
系统时钟22.1184MHZ，如果用其他的时钟请将delay.c文件中的定时器装载值修改一下
（2）
键盘检测在VFD程序中，16312可以驱动VFD，另外外部可接24个按键，并将按键值放到
其内部的存储中，使用时只须发命令读即可。
（3）
由于时间原因，只给出调幅波段的自动搜台功能，调频的自动搜台程序和调幅一样，自己写了。
（4）主要用在组合机和功放机上的收音头大部分以LC72171做锁象环，LA1823做高中频处理
和音频解调，但是有的数调收音头把锁象环和高频处理做在一起，典型的有TEA5757和TEA5756
TEA5757采用了一种所谓的自动调谐系统，在自动搜索时无须读中频，简化了程序。-digital radio attention to the election : (1) remote control chip with TC9012/TC9243 launch frequently used were UPD6121 and LC 7461, the only different is that the lead time for different code or data of the number of different spaces, accept the basic tenets of the same. Will be the location of the relevant procedures can be revised definitive. System Clock 22.1184 MHZ. If the clock I would be grateful if other delay.c document loading value of the timer changed a bit (2) keyboard detection V FD procedure, 16312 can drive VFD, and the external access 24 button. and keystroke values into its internal memory, use only the order can be read. (3) For reasons of timing, given only the AM band automatic search function Taiwan FM automatic seizure procedures and Taiwan AM, himself wrote a. (4)
Platform: |
Size: 75776 |
Author: 王宇 |
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Description: 和同学一起编的代码，保证可用。下载后，解压即可用。-and students together addendum to the code can be guaranteed. After downloading, extract can be used.
Platform: |
Size: 4199424 |
Author: daisiwei |
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Description: fd sfd-fd sfdsssssssssssssssssssssssssssssss
Platform: |
Size: 662528 |
Author: |
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Description: gfdg fdfdgdfgfd g fdg df gd fgfdg fd
Platform: |
Size: 434176 |
Author: liugang |
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Description: 指纹识别源代码。思路完全是按照文件夹中网页里介绍的方法，即提取指纹中的分叉点和端点的位置作为指纹的特征值。由于今天太忙，对图像的预处理作的很失败，程序会提取出很多伪点，而指纹轮廓也没有想出办法过滤。汗，你看看能不能参考把。
三个m文件，fd.m提取指纹中的分叉点，fd2.m提取指纹中的端点，Cpoint.m则是前两个文件运行中需要调用的掩模函数。-fingerprint identification code. Thinking is entirely in accordance with the folder on the website Lane, that the fingerprints of the bifurcation point and endpoint position as a fingerprint eigenvalues. As today are too busy, the image preprocessing for the failure, the program will extract a lot of pseudo-point, and the fingerprint profile nor find a way to filter. Khan, you can look at the information put. 3 m documents, fingerprints fd.m the bifurcation point, fd2.m fingerprints of endpoint, Cpoint.m are two documents before the operation need to call the mask function.
Platform: |
Size: 299008 |
Author: 闫晟 |
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Description: 等离子体覆盖目标的电磁特性的FDTD分析-plasma desired characteristics of the electromagnetic analysis FDTD
Platform: |
Size: 260096 |
Author: zhangjun |
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Description: linux 下epoll的用法，支持几万个fd，大型服务器的网络架构-linux usage under epoll support tens of thousands fd, large server network infrastructure
Platform: |
Size: 2048 |
Author: 陈全勇 |
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Description: erdg dfgdfg fd
Platform: |
Size: 29696 |
Author: |
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Description: 其中sound.c 用于录音和回放。其中特别需要注意的是:1。目前声卡似乎不能打开全双工，所以如果fd = open("/dev/dsp", O_RDWR) ，则无法录音和回放。只能分别设置RDONLY和WRONLY。即半双工方式。否则，就是在录音的时候可以听见，但是无法回放。分析下来似乎是IIC总线中只分配了一个通道给声卡，或者是只启用了一个通道，所以无法录音和放音同步进行。解决方法就是分别以RDONLY方式打开进行录音和WRONLY方式打开进行放音。
Sound1.c用于将录音保存在test.wav文件中，并利用cast test.wav > /dev/sound/dsp回放文件。此处需要注意的是，录音频率必须是44100才能正确回放。否则就会出现类似快放的效果。分析应该是cast方式利用了dsp的默认播放频率44100，所以如果录音的时候低于这个频率，这放的时候就会快放。
此外，设置采样率的时候必须设置成16bit，否则会提示出错。原因尚不知道，估计是与声卡有关。
Platform: |
Size: 3072 |
Author: 杨浩 |
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Description: 优化设计软件 isight -8.0 的license ,很有参考价值,,多平台
-Optimization design software isight-8.0
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Size: 3079168 |
Author: 刘扬 |
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Description: 一些基本的浮点数运算实现,可以方面地在ASM环境下调用这些子程序,简化编程-Some of the basic floating-point realize, you can easily call in ASM environment of these subroutines, simplify programming
Platform: |
Size: 1024 |
Author: 邓辉 |
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Description: c++编程，数据结构与程序设计方法，及算法-c++ programming, data structures and program design methods, and algorithms
Platform: |
Size: 13054976 |
Author: |
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Description: 学习书籍，对大家学习会有很多的好处，尤其是初学者，有很大帮助-Learn from books, for everyone to learn the benefits of many, especially beginners, are very helpful
Platform: |
Size: 112640 |
Author: zhang |
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Description: 学会对文件的记录锁定，及解锁。#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
int main()
{
int fd
int i
struct {
char name[20]
uint ID
int age
} myrec
fd =open("name", O_RDWR|O_CREAT, 0755)
if (fd == -1) return -1
printf("Input your name:") scanf("％s", myrec.name)
printf("Inpute your ID :") scanf("％d", &myrec.ID)
printf("Input your age :") scanf("％d", &myrec.age)
lseek(fd, 0,SEEK_END)
lockf(fd, 1, 0)
write(fd, (void *)&myrec, sizeof(myrec))
lockf(fd, 0 ,0)
return 0
}
执行命令cc lock.c –o lock.out
Chmod +x lock.out
./lock.out
Platform: |
Size: 9216 |
Author: 华羿 |
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Description: 用专业的Rsoft软件 模拟了两直波导与环形波导的耦合情况，并监测其功率变化。 可用于设计光开关或者光调制器-Using professional simulation software Rsoft two straight waveguide with the circular waveguide coupling, and to monitor changes in its power. Can be used to design optical switches or optical modulator
Platform: |
Size: 16384 |
Author: 齐标 |
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Description: 2维的fdtd计算源程序，边界条件为pml-2-D FDTD calculation of the source, boundary conditions for the PML
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Size: 1024 |
Author: jd |
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Description: 二维热能方程的求解，一个比较好的源码！
Discretizer: The Crank-Nicolson and the central FD.-Two-dimensional heat equation, a better source! Discretizer: The Crank-Nicolson and the central FD.
Platform: |
Size: 36864 |
Author: wang |
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Description: （1）用微机原理实验箱FD-8088提供的数码管和芯片做。
（2）假设有一个十字路口，1，3为南北方向，2，4为东西方向，每个路口各有红、黄、绿三个交通信号灯。
（3）用红黄绿三个彩色发光二极管模拟控制交通信号。红、黄、绿灯接通时间分别为5秒、2秒、5秒。
-(1) Microcomputer Principle Experiment Box FD-8088 provides digital control and chip done. (2) It is assumed that there is a crossroads for the north-south direction 1,3, 2,4 for the east-west direction, each intersection have red, yellow and green three traffic lights. (3) with red, yellow, and green three color light-emitting diode analog control traffic signals. Red, yellow and green respectively connected to 5 seconds, 2 seconds, 5 seconds.
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Size: 118784 |
Author: hudal |
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Description: 该载波恢复算法采用FD，PFD，DD相结合，适用于DVB解调系统的载波恢复-The carrier recovery algorithm uses FD, PFD, DD combining applicable to DVB demodulator carrier recovery system
Platform: |
Size: 1024 |
Author: wwyy |
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