基于FPGA的usb程序，采用VHDL语言编写。 开发环境为ISE或者MAXPLUS2。-FPGA-based usb procedures, using VHDL language. Development Environment for the ISE or MAXPLUS2.

基于FPGA的can 总线设计，采用verilog语言编写。在FPGA的开发环境下，新建一个工程，然后将本文件中的各个源代码添加进工程里，即可运行仿真。-FPGA-based bus design can use verilog language. FPGA development environment, a new project, and then the paper all the source code to add the project, Simulation can be run

PC机上开串口调试助手，发送一个字符到开发板（中间通过串口线相连） FPGA收到字符后，回发给PC机上，在串口助手上显示 -On the PC, open the serial port on a PC debugging assistant to send a character to the development board (in the middle connected by serial cable) FPGA received character back to the s

这是用verilog写的配合DE2 FPGA开发板的10进制显示频率计的工程文件夹的压缩包，解压后可直接下载到DE2板上，其中频率输入端是系统自带27M时钟D13用于测试，如果想要应用于别的开发板，可以重新分配引脚。-DE2 FPGA development board with with verilog write with decimal display frequency meter project folder compression package, after decompressi