pal制视频的显示

nios学习资料，fpga调用外部sdram实例，值得初学者下载。(nios learning materials, fpga call external sdram instance, it is worth beginners to download.)

自己今年的毕业设计DDS波形发生器,有正弦波,方波,三角波,锯齿波.-Their own design this year

FFT implementation using C program

本文件是作为超大规模集成电路设计实验室课程（EC354）一部分进行的为期一学期的项目报告。我们的项目是一个4位8点FFT（快速傅立叶变换）核心的完全定制设计。实现的FFT类型是DIF（时间抽取）FFT。

此程序用通过PFGA用VHDL语言实现了傅立叶变换，希望对大家有用

使用Verilog实现的AD采样，很有用的！(Implemented using Verilog AD sampling, very useful!)

本源代码是RS（31,19）编码器的顶端实现程序和测试程序，此程序可以验证编码器工作与否。此代码，已在ModelSim验证通过。并附上测试时所产生的结果图像。(Source code is RS (31,19) encoder to achieve the top programs and testing procedures, this program can verify the encoder to work or not. This code has been verified in ModelSim. Together with the result when the test images.)

电子时钟，可以显示四位，两位显示分钟，两位显示秒，可以用按键控制清零，以及加减数(Electronic clock, you can display four bit, two bit display minutes, the second display seconds, can be used to control the key to clear, and the addition of subtraction)

计数器是数字系统中使用最多的时序电路，它不仅能用于对时钟脉冲计数，还可以用于分频、定时、产生节拍脉冲和脉冲序列以及进行数字运算等。(Counter is the most frequently used sequential circuit in digital system. It can be used not only for counting clock pulses, but also for frequency division, timing, generating beat pulses and pulse sequences, and performing digital operations.)

基于FPGA的1553b接口设计详细设计论文(1553B design based on FPGA)