Nexys 3 的分频器

说明：  基于fpga的DDS程序 可输出正弦波 方波 三角波 锯齿波(DDS program based on FPGA can output sinusoidal square wave triangular wave sawtooth wave)

protel中fpga封装库3，非常难找的-protel library in fpga package three, very difficult to find the

moving tracking based in D5M camera tracking camera

介绍VHDL编程的资料，很详细，值得收藏-vhdl

数字钟通过verilog实现，并且支持Modelsim仿真(The digital clock is implemented by Verilog and supports Modelsim simulation)

关于数字电压表的vhdl实现，有仿真程序，可以下载到板子中。(Vhdl digital voltage meter on the implementation of a simulation program can be downloaded to the board.)

用VHDL语言仿真交通灯 用VHDL语言仿真交通灯-Simulation using VHDL language VHDL language with traffic lights traffic lights Simulation

频率计VHDL编程。设计一个4位数字显示的十进制频率计，其测量范围为1MHz，测量值通过4个数码管显示以8421BCD码形式输出，可通过开关实现量程控制，量程分10kHz、100kHz、1MHz三档(最大读数分别为9.999kHz、99.99kHz、999.9kHz)； 当输入信号的频率大于相应量程时，有溢出显示。 -Cymometer VHDL programming. Design of a 4-digit decimal display frequency, the measurement range of 1MHz, the measured value through the four LED 8421BCD code shows the form of output can be controlled through the switch range, range at 10kHz, 100kHz, 1MHz Three (maximum reading were 9.999kHz, 99.99kHz, 999.9kHz) when the input signal is greater than the corresponding frequency range, it shows overflow.

通过vhdl实现ls138硬件功能 通过vhdl实现ls138硬件功能 -the description of ls138 in vhdl

VHDL库，仿真时使用的，包括打印，类型转换等实用的操作(Practical operation VHDL library, using simulation, including print, type conversion, etc.)