1、在WORD中要输入罗马数字，遵循以下ALT+小键盘数字 代码如下：
ALT+8544 = Ⅰ ALT+8545 = Ⅱ ALT + 8546 =Ⅲ
ALT + 8547 = Ⅳ ALT+8548 = Ⅴ ALT+8549 = Ⅵ
2、ALT+8550 = Ⅶ ALT + 8551 = Ⅷ ALT + 8552 = Ⅸ
ALT+8553 = Ⅹ ALT + 8554 = Ⅺ ALT + 8555 = Ⅻ
3、而在EXCEL与PPT中输入罗马数字，则是遵循如下ALT+小键盘数字 代码如下：
ALT+41713 =Ⅰ ALT+41714 = Ⅱ ALT+41715 = Ⅲ
ALT+ 41716 = Ⅳ ALT+41717 = Ⅴ ALT+41718=Ⅵ
4、ALT+41719 = Ⅶ ALT+41720 = Ⅷ ALT+ 41721 = Ⅸ
ALT+ 41722 =Ⅹ ALT+ 41723 = Ⅺ ALT+41724 = Ⅻ