Implement the 7 segment diplay on spartan 3

FPGA做VGA通讯的详细资料，我找了很久才收集起的，很有用，可供初学者学习实用-FPGA to do VGA communication details, I am looking for a long time before starting the collection, very useful for beginners to learn practical

I2C接口标准建模源码,I2C interface standard modeling source-I2C interface standard modeling source

This VHDL code takes a clock, reset, Capture_EN and SPI data LT2315 ADC and generates SPI_CLK and SPI_nCS of it and reads 12-bit serial data ADC and returns 12-bit parallel data.

使用verilog语言描述的二阶巴特沃斯IIR滤波器，程序中有参数说明，已经运行通过(Using verilog language to describe the second-order Butterworth IIR filter, the program has parameter description has been run through)

用于生成adams或recurdyn所需的路面不平度，用于悬架或其他的仿真(Adams or recurdyn used to generate the required road roughness for suspension or other simulation)

用VHDL语言实现QPSK调制功能和解调功能,(Using VHDL language features QPSK modulation and demodulation functions,)

说明：  1、能正确显示输入信号频率； 2、测量频率范围为1Hz ~ 999999Hz； 3、测量结果以十进制数字显示； 4、能测量幅值较小的信号频率； 5、有自动刷新输出数据的功能（如5s刷新一次）； 6、有自检模块（如产生100Hz的校准方波）；(1. It can correctly display the input signal frequency; 2. The frequency range of measurement is 1Hz ~ 99999hz; 3. The measurement results are displayed in decimal; 4. It can measure signal frequency with small amplitude; 5. It has the function of automatically refreshing the output data (e.g. once in 5S); 6. Self checking module (such as generating 100Hz calibration square wave);)

正弦信号发生器，用VHDL来完成，抗干扰能力较强，(Sinusoidal signal generator, using VHDL to accomplish, a strong anti-interference ability,)

说明：  本例的源描述超过了演示版限制的300行, 如果您需要对其进行编译与模拟,请与北京理工大学 ASIC研究所联系,获取Talent系统的完全版本. 联系方法: 电话:010-68912434 (The source described in this case than the demo version of the 300 line limit, if you need to be compiled with the simulation, please contact ASIC Institute of Beijing Institute of Technology to obtain the complete version of Talent system. Contact: Tel :010-68912434)

VGA 测试程序，可显示彩色条纹，用vhdl语言编写，经过测试，运行稳定，带有注释！-VGA test procedure can be displayed color stripes, using VHDL language, tested and stable operation with Notes!