了解DOS和学会DOS指令，刚接触电脑的时候是从DOS系统开始，DOS时代根本就没有Windows这样的视窗操作界面，只有一个黑漆漆的窗口，让你输入命令。所以学DOS系统操作，cmd命令提示符是不可或缺的-Learn to understand DOS and DOS commands, new to the computer when the system is started from the DOS, DOS era simply do not like Windows Windows u