这是一个用VHDL语言编写的并口转串口程序，在altera开发系统下验证通过，运用于开发板与计算机之间的通信，源程序可以提供参考-This is a use of the VHDL language Parallel to Serial procedures, In altera development system under test passed, the development of applied between the panels and computer communications, can provide a reference source