Verilog&Vhdl混语言对SDRAM的控制源代码，提供了很好的例子，顶层文件为sdrm.v！...

VHDL_COUNTING 0_9_LED 7 段 (ĐẾM 0 ĐẾN 9 HIỂN THỊ LED 7 ĐOẠN BẰNG NGÔN NGỮ VHDL)

Modelsim简明使用手册，十分适合新手使用-Modelsim concise user manual is very suitable for novice to use

说明：  本书从电子技术和通信系统的角度讲解gps接收机的设计开发原理，其内容集中在用户终端，即接收机的设计原理和软件实现上。全书分为两大部分，第一部分为理论篇，第二部分为实现篇。理论篇首先对导航的基本目的进行了阐述，并由一个浅显的二维导航系统对导航信号的特点进行了推导，随后阐述了gps信号格式，同时对于直接影响接收机性能的射频前端部分做了理论分析；实现篇主要对本书实现的软件gps接收机的系统实现和源代码进行了讲解，同时作为总结，将信号处理的结果和有意义的中间变量以图示的方式给出，可以使读者有一个感性的认识，同时提升学习兴趣。. 本书适合从事卫星导航接收机研发的技术人员和卫星通信接收机研究的研究人员，尤其是从事北斗系统研发的专业人员、cdma通信系统研发人员，以及通信电子类专业的高年级本科生和研究生阅读，既可作为教学培训的教材，也可作为相关专业工程技术人员的参考资料。(This book explains the design and development principle of the GPS receiver from the perspective of electronic technology and communication system. Its content focuses on the design principle and software implementation of the user terminal, that is, the receiver. The whole book is divided into two parts. The first part is the theoretical part and the second part is the realization part. Firstly, the basic purpose of navigation is expounded, and the characteristics of navigation signal are deduced by a simple two-dimensional navigation system. Then, the format of GPS signal is expounded. At the same time, the front-end part of radio frequency which directly affects the performance of the receiver is theoretically analyzed.)

说明：  ddr2原理图设计，原厂电路图设计，很好很强大 16bit(ddr2 schematic design, the original schematic design, a very powerful 16bit)

直接序列扩频通信的Verilog仿真代码，在Quartus II中实现。(Direct sequence spread spectrum communication Verilog simulation code, implemented in Quartus II.)

波形发生器，带TESTBENCH， 多平台 -- the design makes use of the new shift operators available in the VHDL-93 std -- this design passes the Synplify synthesis check -- download from: www.fpga.com.cn & www.pld.com.cn -waveform generator, with TESTBENCH. Multi-platform-- the design makes use of the new shift opera tors available in the VHDL-93 std-- this design passes the Synplify synthesis check-- downloa d from : www.fpga.com.cn

this is an peak detection alguritm,in this matlab code u can clean base line noise to have clear ECG signal

基于VHDL实现（7，4）汉明码的编码器和译码器(VHDL-based implementation (7,4) Hamming code encoder and decoder)

Xilinx,Altera,ARM,AVR,S52,Lattice等系列FPGA的下载线电路图和PCB-Xilinx, Altera, ARM, AVR, S52, Lattice series FPGA download cable circuit diagram and PCB

这是一个I2C接口的VHDL实现模块，实现I2C协议-This is a realization of I2C interface VHDL module, I2C protocol to achieve