VHDL开发环境，四人抢答器，实现了四个人能同时抢答的功能。...

整理的网上关于LCD12864(ST7920控制器）的串并口程序，已在stc89c52rd+11.0592MHz的情况下测试通过(Finishing line on LCD12864 (ST7920 controller) serial and parallel programs, in the case of stc89c52rd+11.0592 MHz test)

verilog语法说明，包含verilog golden reference guide，verilog 2001语法(verilog golden reference guide)

FPGA做波形发生器，产生8种波形，包括三角波，正弦波，锯齿波，方波等。(FPGA is used as waveform generator,Generate 8 waveforms, including triangle, sine, sawtooth, square, etc.)

这是我自己编写的三分频，也就是奇数分频，占空比为1：1，当然如果需要其它奇数分频，只要将程序里面的N和counter修改即可-This was my third prepared by the frequency, which is odd hours, frequency and duty ratio of 1:1. Of course, if the needs of other odd hours, frequency, as long as the proceedings inside the N and counter can be amended

/功 能：1.实现与CPLD的通信,从而控制PWM的占空比. 2.实现LCD显示相关信息. // 3.实现对键盘按键的判断和确定相应的操作. 4.实现对电压电流的检测. // 5.实现过载保护功能,电流过大时,切断PWM输出,当排除过流故障后,自动恢复供电 // 6.实现用PID算法跟踪电压,实现稳压输出(/ Function: 1. Achieve communication with the CPLD to control the PWM duty cycle. 2 LCD Display relevant information.// 3. Realize the keyboard keys judgment and determine the appropriate action. 4. Achieve the voltage and current Detection// 5. achieve overload protection, current is too large, cut off the PWM output, when excluding overcurrent fault, automatically restore power// 6. achieve tracking voltage with PID algorithm to achieve the regulated output)

用verilog语言编写的4位算术逻辑单元ALU,功能参考74181，包含.v文件以及测试用.vwf文件(Verilog languages with four arithmetic logic unit ALU, functional reference to 74,181, including. V documents and testing. Vwf document)

采用xilinx的ROMIP核产生类似正弦信号，经过FFt后可以观察结果(Using the xilinx ROMIP nuclear generating similar sinusoidal signal can be observed through the results after FFt)

利用VHDL语言描述出一个双脉冲，可任意设置两脉冲长和中间时间间隔。(A double pulse is described in VHDL language, and the two pulse length and the intermediate time interval can be arbitrarily set.)

说明：  使用FPGA实现RGB图像转灰度图像的算法，下载入自己的电路板可直接将摄像头拍摄到的图像实时转换成灰度图像(FPGA is used to realize the algorithm of transforming RGB image into gray image. The image captured by the camera can be converted into gray image in real time by downloading it into its own circuit board)

quartus ii 环境下，一个完整的利用TEXTIO仿真的源代码，包括读数据文件和输出数据到文件。(Under quartus ii environment, a complete simulation using TEXTIO source code, including reading data files and output data to a file.)