用VHDL写的一个显示程序，希望能帮上大家的忙，嘿嘿。

EDA应用中RAM具体定义实例，供大家学习和写程序参考之用-EDA applications, examples of the specific definition of RAM, for everyone to learn and write programs for reference

说明：  SDRAM的驱动程序，主要是对SDRAM各类状态进行驱动，有刷新模块、读、写模块等。(The driver of SDRAM mainly drives various states of SDRAM, including refresh module, read and write module.)

四通道DDS信号发生器，很好用的代码，大家一起分享(Four-channel DDS signal generator)

正弦波电流驱动的无刷直流电机性能分析，通过分析方波电流驱动与正弦波电流比较，得出正弦波电流驱动电机性能较好(Sine wave current drive brushless DC motor performance analysis, by analyzing the square-wave current drive with sine wave current comparison, the sine-wave current drive motor performance is better)

说明：  基于fpga的信号发生器，通过调整按键可以生成正弦波，方波，三角波，锯齿波(Sine wave, square wave, triangular wave, sawtooth wave)

11 阶FIR 数字滤波器,verolog描述，通过modelsim 6.0 仿真，Quartue综合-11-order FIR digital filter, verolog description, modelsim 6.0 through simulation, Quartue integrated

基于延迟线的数字脉冲宽度调制，用于电力电子设备的触发信号产生(puls wide modulator based on delayline)

调整iq幅度不平衡的模块，可以解决载漏和边带问题。(Iq amplitude imbalance adjustment module can be resolved carrier and sideband leakage problems.)

一组练习，关于VHDL的一些基础的知识和练习可以参考一些具体的问题-A group of exercises, on a number of VHDL-based knowledge and practice can refer to some specific questions

给予QPSK调制的OFDM例程，简单明了的表述了OFDM的通信原理(Given OFDM QPSK modulation routine, simple expressions of OFDM communication theory)