自己用VHDL语言写的一个秒表程序，包括秒，分秒和百分秒。有程序说明和VHDL代码，一看就懂-Own use VHDL language used to write a stopwatch program, including the seconds, minutes and seconds and hundredths of a second. There descr iption of the procedures and VHDL code, one can understand