ymodem协议源码实现

这是为公司写的接受西门子、GE、东芝等大公司的DICOM图像的，经过严格的测试。这是演示版。源码可以向我索取cai_liu_cn@etang.com-it is for the company to write accept Siemens, GE, Toshiba Corporation DICOM images, after rigorous testing. This is the demo version. FOSS can ask me cai_liu_cn@etang.com

Cypress Semiconductor makes a variety of PLL-based clock generators. This application note provides a set of recommendations to optimize usage of Cypress clock devices in a system. The application note begins with recommended termination techniques for clock generators. Subsequently, power supply filtering and bypassing is discussed. Finally, the application note provides some recommendations on board layout.

1、FIR数字滤波器的设计（1）在主函数中调用dsnFIR函数，滤波器参数设为21阶、带阻、矩形窗、采样率1000Hz、上下截止频率分别为100Hz,400Hz；（2）利用drawFIR函数分别画出所设计的FIR滤波器的幅频特性图和相频特性图。2、FIR数字滤波实现（1）编写一个输入信号子程序func()，输入信号为一连续函数，表达式为；（2）对输入信号进行采样，即       ，这里取采样率，得到离散序列x(n)；（3）取x(n)中前40个点的值，将其转为复数存入复数数组x[64]中，并对x[64]做64点的FFT，得到的X(k)存回x[64]中；（4）已知在主函数中调用dsnFIR函数后得到的输出结果b[21]即为FIR滤波器单位冲激响应h(n)的值，将其转为复数存入复数数组h[64]中，并对h[64]做64点的FFT，得到的H(k)存回h[64]中；（5）已知用FIR滤波器对输入信号进行滤波就是将输入信号x(n)与滤波器单位冲激响应h(n)做卷积运算，故我转到频域采用FFT方法实现对输入信号x(n)的滤波，即将X(k)与H(k)相乘，得到滤波后信号的FFT变换Y(k)，然后只需对Y(k)做IFFT变换即可得到滤波后信号y(n)。

Polarization beam splitters and 3dB couplers are used to construct a home-made90 ° optical hybrid, by  which polarization diversity optical coherent receiver is carried out with single-ended detection.A10Gb / s oscillation multiplexed differential phase shift keying (DPSK) signal is transmitted through280km Standard single- mode fiber (SSMF) using erbium-doped fiber amplifier (EDFA) amplification, and no error bits are measured in th result.

%fm.m %频率调制的Matlab演示程序. %被调信号为m(t)=sin(100t).- fm.m frequency modulation of Matlab demo program. transferred signal m (t) = sin (100t).

这是一个数码管显示数字的C语言源代码，这个程序输入为数字，输出为符号化的数字，类似于数码管显示数字的功能。-This is a digital display the number of C language source code, the procedure for the digital input and output for the symbol of the figures, similar to a digital display digital functions.

电力电子电路matlab仿真程序，丰富实用，即学即会。-Matlab power electronic circuit simulation program, rich in practical, that will learn.

QExtSerialPort ：多个开源类集合，提供交叉平台的串行端口操作功能: 请用 winrar 解压-QExtSerialPort: more than collection of open-source categories to provide cross-platform serial port operation function: Please use winrar Decompression

用vhdl做得CPLD静态两位数码管扫描 显示“10”两位数码管公用段选-CPLD with VHDL done two static scan digital tube displays

关于语音芯片6188的发送程序，有校验和改变参数的功能，把要发的东西放在buf里面就可以了。-On the voice chip of the sending process 6188, a check and change the parameters of the function of the fat things to buf on inside it.