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PI控制器的算法及源码，迅速掌握FPGA的VHDL算法实现！(Algorithm and source code of PI controller, quickly grasp the implementation of VHDL algorithm in FPGA!)

LED灯、跑马灯的显示源程序，包括对代码的说明(Display source code LED lights, marquees, including the code specification)

32位bit输入的CRC32校验，verilog的代码，以及modelsim的testbench代码(The encode of CRC32 with 32bit-inputs based on verilog, and according encode of testbench)

是51单片机常用头文件定义，直接调用就可以，包括：1602液晶，12864液晶，5110屏，I2C,UART,精确延时函数，PWM调速，DS1302，DS18B20,,,,,,,(51 microcontroller used header file defines direct call can include: 1602 LCD, 12864 LCD, 5110 screen, I2C, UART, precision delay function PWM speed control, DS1302, DS18B20,,,,,)

DESCRIPTION OF FULL ADDER

简易函数发生器，能产生正弦波，三角波，梯形波，方波，并且可调频率和幅度值。(Simple function generator can produce sine, triangle wave, trapezoidal wave, square wave, and the adjustable frequency and amplitude values.)

detailed spec for Xilinx V5 FPGA, reference for programming of FPGA, system designer or ASIC designer.

注意：是verilog语言写的 一bit的全加器，实现4位数的串行加法器，一个时钟能完成一次一bit的全加(Note: It is verilog language to write a bit full adder, to achieve four-digit serial adder, a clock can be completed once a bit full adder)

该程序使用Verilog语言产生LFM信号(The program uses Verilog language to generate LFM signals.)

全部通过，是我的精心设计，完全满足初学者的要求。-all passed, I was carefully designed, fully meet the requirements of beginners.