这个程序是基于等精度测频原理的频率计，用VHDL语言实现，频率测量测量范围1~9999；用4位带小数点数码管显示其频率，并且具有超量程、欠量程提示功能。...

利用verilog HDL逐点比较法实现直线和圆弧插补(Use verilog HDL by-point comparison method to achieve linear and circular interpolation)

电子设计自动化中关于交通信号的转换的实现程序，基于VHDL语言实现的-Electronic design automation in the conversion of traffic signals on the realization of the procedure, based on the realization of VHDL language

Electric Guitar Digital Effects Processor

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)

说明：  FPGA 读写 SRAM 存储块，verilog代码(Read and write SRAM memory block and Verilog code in FPGA)

verilog ADPLL file with testbench.v

本设计是一个伪随机数发生器。此设计；

电子表，实现计时记分计秒的功能，同时可以对时分秒进行校正，实现调时功能。-Electronic watches, time points of dollars to achieve a second function, at the same time when the minutes and seconds can be calibrated to achieve when the transfer function.

一个SDH中最基本传输模块STM-1的帧头检测器，verilog编程实现-A basic SDH transmission module STM-1 Header detector, verilog Programming

这些代码为 对于基本的FPGA使用模块beep进行了例化 在工程 系统级建模时只需要直接调用就好了(The code for the basic FPGA using the module beep instantiated only need to be called directly in the engineering system-level modeling like)