vhdl code for decoder and detemines the basic mechanism of gates of decoder

控制8个发光二极管中的一个发光二极管发光，其它7个发光二极管都出于截止状态，发光二极管的导通顺序按照向左或向右两个方向移动，并且通过按键控制发光二极管循环发光移动的方向。(Control of a light-emitting diode light-emitting eight light-emitting diodes, the other seven light-emitting diodes for the cut-off state, light-emitting diode conduction order in accordance with the left or right move in both directions, and light-emitting diode cycle luminous button control mobile direction.)

利用dsp builder设计的IIR滤波器，已经验证完全可以使用，只需要把其中系数改变。内含VHDL代码(Design IIR filters by dsp builder have been verified , just change the coffetions including VHDL code.)

数字时钟管理器，xilinx公司开发板集成时钟，实现分频、倍频等功能。(Digital clock managers, xilinx development board integrated clock divider, multiplier, and other functions.)

Quartus? II 相关的语言 详细介绍了VHDL verilog软件开发过程(Quartus ? II related language detailed introduces the verilog VHDL software development process )

FPGA实现DDS波形发生器，多种信号的产生，(FPGA realization of DDS waveform generator to produce a variety of signals,)

The xapp851.zip archive includes the following subdirectories. The specific contents of each subdirectory below:   tl   - HDL design files   sim   - simulation files   synth - Synthesis related files   par   - Place/Route related files 以及DDR SDRAM控制器设置.pdf文件

实现psk调制解调，vhdl代码，仿真文件也有(psk shixian tiaozhiyujietiao)

说明：  使用DE2实现DDS，步骤简单，配置管脚可自查看(Using DE2 to realize DDS, the steps are simple and the pins can be self-checked.)

利用SCCB和FPGA实现视频采集的论文，对相关开发人员具有很强的参考价值！ (FPGA implementation using the SCCB and video collection of the papers, the relevant developer has a strong reference value ! )

full adder in vhdl of 4 bits