airthmatic & logic unit

4个7段lcd同时显示的程序，已经在digilent的nexy2板上通过验证，非常好用易懂，适合初学者学习-display 4 leds

本代码仿真了WCDMA小区搜索。cell_search_cpich scramble wcdmasource(This code emulation WCDMA cell search. cell_search_cpich scramble wcdmasource)

msttr是用vhdl语言开发的一个交通灯程序-msttr VHDL language is a development of the traffic lights procedures

VHDL编写的4个led灯循环明暗变化，通过改变波形占空比实现，课堂作业自编程序-VHDL prepared by the four led lights cycle shading changes, by changing the waveform duty cycle to achieve, self-compiled class operating procedures

it is a filter contract VHDL .(it is a filter contract VHDL.)

To increase simulation speed, ModelSim® can apply a variety of optimizations to your design. These include, but are not limited to, mergingprocesses, pulling constants out of loops, clock suppression, and signal collapsing. You control the level of optimization by specifying certain switches when you invoke the compiler.

4*4按键扫描电路，用数码管显示0~F，基于VHDL语言设计，包括按键扫描，数码管扫描，数码管显示，按键消抖等代码

A/D采集的数据缓存进入fifo，并通过读信号将FIFO中的数据送入网口(A/D sample data buffer to fifo,and then read enable to ethernet.)

说明：  FPGA实现乒乓球游戏 代码及仿真 VGA实现(FPGA realizes table tennis game code and simulation VGA implementation)

初学ＶＨＤＬ有用的，了解后对复杂设计有很大帮助．-VHDL beginner useful understanding of the complexity of the design has been inspired by them.