一个verilog代码，该代码很适合初学者熟悉FPGA的开发流程，主要功能为实现七段代码管的显示，主要针对xilinx公司spartan3系列的FPGA-a verilog code that are very suitable for beginners FPGA familiar with the development process, main function of the realization of the code in paragraph 107, xilinx against