说明：  FPGA与PC端实现串口数据的收发，先从PC端接收数据，然后发回给电脑，可通过串口助手验证。(The serial port data is sent and received between the FPGA and the PC. First, the data is received from the PC, and then sent back to the computer. It can be verified by the serial port assistant.)

FPGA按键延时模块，产生key_value和key_flag 可直接例化调用(The key delay module of FPGA)

source code for Ethernet logic

主要编写了一组二进制数据通过根升余弦滤波器后的波形，但并没有使用ISE内部的FIR滤波器内核，该程序相当于编写了一个根升余弦滤波器。(Mainly prepared a set of binary data through the root raised cosine filter waveform after, but did not use the ISE internal FIR filter kernel, the program is equivalent to the preparation of a root raised cosine filter.)

警卫控制系统，主要 控制 电梯系统 ，通过422通讯格式完成与电梯系统之间的 通讯协议。-Security control system, the main control elevator systems, through to complete the 422 communication format, communication protocol between the elevator system.

一种实现计算机接口rs232与FPGA通信的基于VHDL语言设计的一段非常简洁的程序(A RS232 computer interface implementation with FPGA-based VHDL language communications designed a very simple procedure)

说明：  浮点数加法器的源代码,实现浮点数的加法功能，浮点数遵循的是IEEE745标准(floating_piont addition)

描述了使用FPGA接口PDIUSBD12开发USB接口的流程.-Describes the use of FPGA Interface USB interface PDIUSBD12 development flow.

自己写的7人表决器的verilog程序，实现4人以上通过则通过的功能。(Seven people to write their own voting machine verilog program to achieve four or more people pass through function.)