测试人体视觉的反应时间，可以作为vhdl编程的练习之用，也可以更进一步的开发成为具有商业价值的产品，这里面只是能够实现测试人体视觉反应时间的基本功能的程序...

基于fpga的fskpsk信号产生器，可实现对1.2kHz和2.4kHz正弦波的采样-based on the fpga and fskpsk signal generator,can achieve sample to the 1.2kHz and 2.4kHz sin wave

数字电子琴控制器的ＶＥＲＩＬＯＧ代码，含中文注释．-The number of organ controller Verilog code, with English Notes.

SHIFT_8REG是8位的一个具有移位功能的寄存器，每一次数据打入都会从这个寄存器的最低位打入，并相应进行向左移位。 ODD_110BREG是一个3位的备份寄存器，寄存器中存放的是奇数帧的同步头，也就是110。 EVEN_9BHREG是一个8位的备份寄存器，寄存器中存放的是偶数帧的同步头，也就是10011011。这两个寄存器的初始值在系统一开始就打入。 -SHIFT_8REG is eight with a displacement of the functional Register, Each will enter the data from the register into the lowest point, and the left shift accordingly. ODD_110BREG is a three backup Register, the Register is stored in the odd frame synchronization head, is 110. EVEN_9BHREG 8 is a backup Register, which register is kept even the first frame synchronization, is 10011011. This register the two initial value of the system into a start.

用verilog写的，基于查表法实现的LOG10运算器，在Altera FPGA中应用。-It is a verilog design of LOG10 calculation unit, which is based on LUT arithmatic. And it is applicated in Altera FPGA.

伽罗华域的乘法器的设计，使用有限域设计乘法器(Galois field multiplier design, the use of finite field multiplier design)

ALTERA on chip fifo. this document is from altera. good resouce

在fpga中对GPS信息采集程序。具有很好的参考性(In the fpga in the GPS information collection procedures. Has a very good reference)

非常优秀的国外VHDL设计教程，可进行MODELSIM模拟等操作-Excellent foreign VHDL design tutorial, it can conduct operations such as ModelSim Simulation

PID算法控制点击速度，PWM脉宽调制方法(PID algorithm to control the motor Speed)

说明：  用verilog语言实现计算反正切函数，在软件无线电中解调PM/FM中使用的尤为频繁。上传的压缩包是modelsim工程，基于6.5c,里边包含一个完整的PM波产生以及解调过程的matlab文件仿真，并取其中间的I和Q支路做为verilog文件的输入，并将其借条输出与MATLAB实际解调输出作比较。 鉴相器的设计基于CORDIC算法，其精度取决于迭代的深度。由于工程实际运用只需要解调出atan值，并不需要绝对的值，所以并没有给予加权，需要的同学可以自己加上。(Calculated using verilog language arc tangent function, the software radio demodulation PM/FM is particularly used frequently. From the archive is modelsim project, based on 6.5c, inside the PM contains a complete demodulation process of wave generation and simulation matlab file, and whichever is the middle of the I and Q branch verilog file as input, and its IOU demodulated output and actual output of MATLAB for comparison. Phase detector design is based on CORDIC algorithm, its accuracy depends on the iteration depth. As the practical application of engineering demodulated atan value only and does not need absolute value, and there is no weight given to the need of the students can add their own.)