6通道正弦波发生器，产生频率，相位，幅值都可调的正弦波形...

开发系统上采用的时钟信号的频率是20MHz，可分别设计计数器对其计数，包括计秒、分、小时、日、周、月以及年等。在每一级上显示输出，这样就构成了一个电子日历和时钟的模型。为了可以随意调整计数值，还应包含设定计数初值的电路-Development system using the clock signal frequency is 20MHz, the design can be counter to its count, including seconds, minutes, hours, days, weeks, months and years. At every level to show the output, thus constitutes an electronic calendar and clock models. Can also adjust the order value, should also be included in setting the initial count circuit

说明：  之前一直找不到自学编写了一个，PID案例，分享下(I have been unable to find a self-taught, compiled a PID case, share under)

CH4CH2CH1VHDL 数字电路参考书所有程序7-CH4CH2CH1VHDL digital circuit reference all proceedings 7

ＶＨＤＬ语言的一些经典实例源代码，包括状态机，时序电路，组合逻辑电路等(Some classic examples of VHDL language source code, including the state machine, sequential circuits, combinational logic circuits)

VHDL实用教程（潘松）,非常经典讲解VHDL语言，包含基本语法及实例。-VHDL Practical Guide (Pan Song), is a classic on the VHDL language, including basic grammar and examples.

实现同一个时钟输入,可以实现多分频,在一个时钟的驱动下-Realize with a clock input, can realize multi-frequency, in a clock-driven

旋转LED 实现自适应转速 字幕滚动 对接的程序(Rotating LED Adaptive Speed ​ ​ subtitles scroll docking program)

这是本人写的可显示128*64LCD全屏汉字的程序,直接下到片子里即可出现象(需自己定制ROM).想显示第二屏的话只需加一个状态即可.-I write this is the display of 128* Embedded full screen characters procedures, directly to the unit under the blankets will be out phenomenon (it-yourself customized ROM). to the second screen shows only the state can be a plus .

内容有VHDL语法总结及相应的实例应用，每个程序我都亲自试过，特别适合初学VHDL的同学们。常用的程序有 设计一个M序列发生器，M序列为“11110101”、 设计一个彩灯控制器，彩灯共有16个，每次顺序点亮相邻的四个彩灯，如此循环执行，循环的方向可以控制。设计一个跑马灯控制器。一共有8个彩灯，编号为LED0~LED7，点亮方式为：先从左往右顺序点亮，然后从右往左，如此循环往复等等。这些都是我在考试前熬夜总结的，很有用。如果配合开发板用的话，那就更好了 ( VHDL syntax summary content and the appropriate application instance, every program I have personally tried, especially for students of beginner VHDL. Common program has designed a sequence generator M, the M series is 11110101 , a lantern controller design, a total of 16 lights, each sequence of four adjacent lights lit, so the cycle execution cycle direction can be controlled. Marquee design a controller. A total of eight lights, numbered LED0 ~ LED7, the lighting way: first left to right order of light, and then right to left, so the cycle and so on. These are all I stay up all night before the exam summary, very useful. When combined with the development board, then so much the better )

用verilog 语言编译16QAM调制(a great complied code of 16QAM modulation for OFDM)