VHDL实现ALU的源代码，并且提供了一个详细的testbench！

以太网的vhdl和verilog代码，供大家学习-Ethernet VHDL and Verilog code for everyone to learn

A 4 bit twisted ring counter is a sequential circuit which produces the following sequence of output values: 0000, 1000, 1100, 1110, 1111, 0111, 0011, 0001 and then repeats. Design a circuit for a 4 bit twisted ring counter that uses four D flip flops. Draw a state transition diagram, a state table and a schematic for your circuit. Design an alternate implementation using just three flip flops and draw a state transition diagram, state table and a schematic for your circuit. If your designs are extended to implement an n bit twisted ring counter, how many flip flops are required using each of the two approaches. In what situations would you prefer the first method? In what situations would you prefer the second?

用Actel公司的Fusion系列FPGA开发的RTC实验程序-With Actel" s Fusion Series FPGA development of experimental procedures RTC

彩色空间转换，RGB和YUV互转的matlab源码(RGB converting to YUV, YUV converting to RGB, Matlab source code)

altera公司cpld/fpga开发软件quartus2中文使用教程-altera company cpld/fpga development of software to use Chinese quartus2 Guide

基于VHDL语言开发的I486总线接口程序。实现了一个三态的总线，可保证数据的正常传输。-based on VHDL development of the I486 bus interface procedures. Implementation of a three-state bus can ensure that the normal data transmission.

模数转换的一个工程---包括vhdl源程序和编译后产生的相关文件-Analog-digital conversion of a project- including VHDL source code and compile the relevant documents after

本文档对quartus与modelsim运用操作描述十分详细，对初学者，会有很大帮助！(Quartus and modelsim this document on the use of operations described in great detail, for beginners, there will be a great help!)

说明：  可以实现2PSK的信号调制，已经过Modelsim波形仿真(It can realize 2PSK signal modulation and has been simulated by Modelsim waveform.)

基于FPGA的视觉电生理图像刺激系统的设计(Based on the design of FPGA visual electrophysiology image stimulation system)