时钟液晶 DE2 系列

VGA显示原理与VGA时序实现论文,详细介绍了VGA的原理 (Principle and VGA VGA display timing to achieve paper, detailing the principles VGA)

说明：  用于实现上位机与下位机之间通过RS232协议来进行通讯。(It is used to realize communication between upper computer and lower computer through RS232 protocol.)

在数字通信中，通常直接从接收到的数字信号中提取位同步信号，这种直接法按其提取同步信号的方式，大致可分为滤波法和锁相法。锁相法是指利用锁相环来提取位同步信号的方法，本设计方案就是基于锁相环的位同步提取方法，能够比较快速地提取位同步时钟，并且设计简单，方便修改参数。采用Quartus II设计软件对系统进行了仿真试验，并用Altera的Cyclone II系列FPGA芯片Ep2c5予以实现。(In digital communication, usually from receiving directly in digital signal extracted a synchronized signal, the direct method according to the extraction synchronized signal way, can be roughly divided into filtering method and phase lock method. Phase lock method is using of phase locked loop to extract a synchronized signal method, the design scheme is based on phase locked loop of a synchronous extraction method and can be quickly extract a synchronous clock, and design simple, convenient modification parameter. The Quartus II design software of the system, and the simulation test Altera Cyclone II FPGA chip to achieve Ep2c5 series.)

this files in Quartus2 are fulladder

Verilog语言的流水灯设计程序，对初学者很有用。(Water lights Verilog language design program useful for beginners.)

I2C MASTER DESIGNED by Verilog

quartus verilog 逻辑分析仪， 检测数字信号（与示波器检测模拟信号对应），vga显示输出。经过本人调试可用。

CORDIC(Coordinate Rotation Digital Computer)算法即坐标旋转数字计算方法。 CORDIC算法,能够通过平移和累加快速实现基础的数学函数,包括三角函数,开方,指数,对数,平方根等函数。(CORDIC (Coordinate Rotation Digital Computer) algorithm for the coordinate rotation digital calculation. CORDIC algorithm can be achieved through the rapid translation and accumulation based on mathematical functions, including trigonometric, square root, exponential, logarithmic, square root and other functions.)

spartan6学习资料，官方资料，用户手册，包括5个主要文件(Spartan 6 Learning Materials, Official Materials)

VHDL Bible. It is a must read for any front end vlsi designer.