用于实现sin，cos三角函数计数的VHDL程序代码

设计一个能求出一个32bit字中两个相邻0之间最大间隙的电路。完成HDL设计及testbench描述，给出综合后的时序仿真结果。提交纸质文档。(Design a circuit that can find the maximum gap between two adjacent 0 in a 32bit word. The HDL design and testbench description are completed, and the result of comprehensive simulation is given. Submit paper documents.)

这是使用VHDL语言编写的密码锁程序,供大家参考-This is the use of the VHDL code lock preparation procedures for reference

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.

四位密码锁，移位显示，可以设置和更改密码。-4 lock, shift, it can be set up and change your password.

说明：  使用FPGA实现中值滤波算法，能够使数据直接使用该系统对数据进行中值滤波。(FPGA is used to realize the median filtering algorithm, which can make the data directly use the system for median filtering.)

ht82v38 线性ccd 16位 AD转换fpga程序VHDLHT82V26(38)是Holtek(隶属台湾盛群半导体股份有限公司)出品的专用于CCD/CIS模拟信号的处理器。当然，其也可做为通用ADC芯片使用。 HT82V38采用3.3V,5V工作电源，采用三个信道的结构（3个ADC输入通道，分别为R、G、B通道），可提供一个、两个或三个信道的操作模式供用户选择，其A/D转换器精度为16位（16bit），转换速率最高达到30MSPS。

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)

本书简要介绍了Verilog硬件描述语言的基础知识，包括语言的基本内容和基本结构 ，以及利用该语言在各种层次上对数字系统的建模方法。书中列举了大量实例，帮助读者掌握语言本身和建模方法，对实际数字系统设计也很有帮助。本书是Verilog HDL的初级读本，适用于作为计算机、电子、电气及自控等专业相关课程的教材，也可供有关的科研人员作为参考书。(This book briefly introduces the Verilog hardware description language basics, including basic elements of language and basic structure, and the use of the language at various levels on the digital system modeling. The book lists a large number of examples to help readers master the language itself and the modeling of the actual digital system design is also helpful. Verilog HDL book is a primer for a computer, electronic, electrical and automatic control and other specialized courses related to materials, but also for the researchers as a reference.)

该工程用verilog编写，已通过串口调试助手调试通过，接收模块采采用8倍波特率采样数据，有较好的滤波功能，在PC上完成自发自收功能。 (The project is written in verilog debugging through serial debugging assistant, adopted 8 times the baud rate sampling data receiver module, better filtering done on the PC spontaneous self-closing function.)

这是本人自己编写的可用于256*256大小的图像进行sobel边缘检测的vhd文件，可在QuartusII或MaxplisII下综合和仿真，并在FPGA上测试过。可以进行修改支持其他大小图像的sobel边缘检测，同时还可以实现其它的图像模块化处理算法，例如高斯滤波，平滑等。(this is my own preparation for the 256* 256 size of the image segmentation Edge Detection vhd document in the next QuartusII or MaxplisII integrated and simulation, and the FPGA tested. Can be adapted to support other size image segmentation edge detection, It can also achieve other modular image processing algorithms, such as Gaussian filtering, smoothing and so on.)