脉动进位加法器

详细介绍了VGA官方例程Verilog代码，非常好很实用

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

异步串口通信口在FPGA实现，功能有（1）串行数据接收的同步控制；（2） 串行数据发送的同步控制-asynchronous serial communication port of the FPGA, function (1) serial data receiver synchronization control; (2) the transmission of serial data synchronization control

ＦＰＧＡ在通信上的运用：基于VHDL的帧同步程序(Application of FPGA in communication: Based on VHDL frame synchronization procedures )

时间同步后即可确定每帧数据的起始位置，这样就能完整的截取下每一帧。但是，数据中还带有频偏信息。在常规的通信系统中，多普勒很小仅仅会带来很小的频偏，但是在大多普勒的情况下，频偏将非常大，20马赫的速度将会带来将近34K的频偏。因此，如何很好的纠正频偏即为本系统的难点。 OFDM中，我们将大于子载波间隔倍数的频偏称为整数倍频偏，而将小于一个子载波间隔的频偏称为小数倍频偏。频偏矫正精度只要能保证小于十分之一倍的子载波间隔，频偏就不会对均衡和解调造成影响。本文中我们借鉴这种思想，由于硬件资源限制，我们将在接收端做64点FFT，即相当于将频域划分为64份，我们将小于 的频偏称为小数倍频偏，将 整数倍的频偏称为整数倍频偏。本程序即基于SCHIMDL经典方法完成小数倍频偏纠正(After time synchronization can determine the starting position of each frame data, so you can complete the interception of each frame. However, in the data with frequency information. In conventional communication systems, doppler small will bring only small deviation, but in the case of most of the doppler, frequency PianJiang is very large, 20 Mach speed will lead to deviation of nearly 34 k. Therefore, how to good to correct deviation is the difficulty of this system. OFDM, we will be bigger than the sub-carrier spacing ratio of frequency deviation is called the integer frequency offset, and the interval will be less than a child carrier frequency offset is called decimal frequency doubling. Deviation is less than one over ten times as long as can guarantee accuracy of sub-carrier spacing, deviation will not affect balance and demodulation. This article, we draw lessons from the idea, due to the limited hardware resources, we will do 64 points FFT at the receiving end, which is equ)

十六进制计数器递增 ALTERA FPGA 板 7 段显示器上的每一秒。

介绍如何使用 FPGA 内部的 ROM 以及程序对该 ROM 的数据读操作。(This paper introduces how to use the ROM inside the FPGA and how to read the data of the ROM by the program.)

说明：  文档科斯塔斯环路滤波器。。。。。般若撒根本(wendangsafwrfgvearbeabf)

跑马灯-是移位寄存器 有6个灯，无延时entity-Bomadeng-shift register is a six lights, without delay entity

matlab随即图设计程序，应该比较有用，希望能申请会员成功吧。。(matlab then drawing design program)