用VHDL写的

基于cordic算法的DDS的Verilog代码。经过仿真验证，绝对可靠。(Based on cordic algorithm DDS Verilog code. Through the simulation, is absolutely reliable.)

基于fpga和xinlinx ise的usb端口vhdl程序，希望对你有所帮助！-VHDL program for USB port based fpga and xinlinx ise, wish help for you!

//led.v /*------------------------------------- LED显示模块：led(CLK,AF,ADDR,DATA) 功能： 显示 注意事项： 8位LED 参数： CLK:扫妙时钟输入，推荐1kHz AF:数码管输出，a～h ADDR:数码管选择位数出，0~2 DATA:显示数据输入0~9999 9999 编写人： 黄道斌 编写日期： 2006/07/13 -------------------------------------*/-//led.v /*------------------------------------- LED Display Module : led (CLK, AF, ADDR. DATA) function : to show : 8 LED parameters : CLK : So Wonderful clock input, Suggest 1kHz AF : digital tube output, a ~ h ADDR : digital control options from the median, 0 ~ 2 DATA : data show that the importation of 0 ~ 9999 9999 prepared : Huang Daobin preparation date : 2006/07/13-------------------------------------*/

VHDL数字系统设计和工程实践5，包含原理，真值表和原理图，以及VHDL源代码.-VHDL digital system design and engineering practice 4, including the principles, truth table and schematic, as well as VHDL source code.

altera DE2 实验板专用 CCD驱动-altera DE2 board dedicated CCD driver

用VHDL语言实现QPSK调制功能和解调功能,(Using VHDL language features QPSK modulation and demodulation functions,)

tPad DE2-115/70开发板可用的摄像头采集、显示程序，QT10.0以上环境可用，原装代码，可以进行修改加以使用，如使用到倒车影像系统中，视频显示等。(tPad DE2-115/70 development board available cameras capture, display program, QT10.0 over the environment is available, the original code can be modified to be used, such as the use of the reversing video system, the video display.)

本代码主要功能是PPM解码，采用Verilog语言，通过移位寄存器和组合电路实现解码。(The main function of this code is PPM decoding.)

交通灯电路，南北方向和东西方向分别按绿灯、黄灯、左拐灯、黄灯、红灯的顺序两灭，数码管显示相应的灯亮的时间的倒计时。已通过编译和仿真。-Traffic light circuit, north-south direction and east-west direction respectively green, yellow light, left light, yellow light, red light destroy the order of two, a digital LED display lights the corresponding period of the countdown. Has passed the compilation and simulation.

掌握二-十进制(BCD码)异步计数器的工作原理和设计方法； 掌握中规模集成二-五-十进制异步计数器74LS90的功能及其应用；(Master II- Decimal (BCD code) the principle and an asynchronous counter design grasp the scale of integration in two- five- Decimal asynchronous counter 74LS90 features and applications )