用VHDL写的一个显示程序，希望能帮上大家的忙，嘿嘿。

piiii jeirafjorjg knfojojr lajfpopazf

印制线路板设计经验点滴-Printed Circuit Board Design Experience

说明：  对MAX5250芯片进行控制，实现DA转换输出。(Controlling MAX5250 Chip)

verilog 代码. 经验证成功,可以作为标准单元库,为FPGA设计者使用.-Verilog code. Certified success, as a standard cell library for the use of FPGA designers.

Coding Styles for if Statements and case Statements

主要论述了基于FPGA的末制导雷达伺服系统设计。结合末制导雷达讨论其电机控制、二阶伺服系统性能和PID校正算法,利用VHDL语言设计,实现基于FPGA的方位步进电机开环定位控制和俯仰直流电机闭环速度控制的伺服系统。结合实际应用中遇到的问题,提出了基于"反馈控制"理论的有效的补偿算法,该算法提高了伺服系统的稳定性、快速性和精度。(Mainly discusses the design of terminal guidance radar servo system based on Field Programmable Gates Array(FPGA).It includes the system’s electric machine control,second-order servo system performance and PID correction algorithm based on Virtual Hardware Description Language(VHDL) on azimuth stepping motor open loop positioning control and pitch direct current electric machine closed loop speed control of the FPGA servo system.In allusion to some factual problems during its application,presents corresponding effective solutions based on traditional control theory "Feedback Control".The fact proves that these methods can greatly improve the stability,speediness and precision of the original servo system.Additionally,a basic algorithm which can be realized in a terminal guidance radar servo system is given)

说明：  基于fpga的ad采样程序 可控制ad9226对信号进行采样(Ad9226 signal sampling can be controlled by ad9226 sampling program based on FPGA)

基于fpga的液晶驱动开发过程相关资料，用于借鉴和学习-Fpga-based LCD driver development process relevant information, for reference and learning

说明：  设计一简易数字频率计，其基本要求是： 1)测量频率范围0～999999Hz； 2)最大读数999999HZ,闸门信号的采样时间为1s；. 3)被测信号可以是正弦波、三角波和方波； 4)显示方式为6位十进制数显示； 5）具有超过量程报警功能。 5)输入信号最大幅值可扩展。 6）测量误差小于+-0.1%。 7)完成全部设计后，可使用EWB进行仿真，检测试验设计电路的正确性。(The basic requirements of designing a simple digital frequency meter are: 1) The measuring frequency range is 0-999999 Hz. 2) The maximum reading is 999999HZ, and the sampling time of gate signal is 1 s. 3) The measured signal can be sine wave, triangle wave and square wave. 4) The display mode is 6-bit decimal number display. 5) It has alarm function beyond range. 5) The maximum amplitude of input signal can be expanded. 6) The measurement error is less than +0.1%. 7) After completing all the design, EWB can be used to simulate and test the correctness of the circuit.)

VHDL USB2.0接口源码,内有说明,详细.-VHDL USB2.0 interface source code, which is described in detail.