要问《汉语拼音方案》(以下简称《方案》)的最大功绩是什么,在我看来,一定要提到计算机汉字系统的实现。计算机汉字系统的关键是输入方式。现有的输入方式大体可分成三类,或者说有三种典型的方式。第一种是大键盘方式。北京大学研制的计算机中文照排系统用的就是这种方式。这类似于老式的中文打字机,采取一字一键的办法。固然有无师自通的优点,但是一方面有速度不易提高的缺点,另一方面有造成职业病(视力减退)的危险,所以不受欢迎。第二种是字形编码。这就是按照专门设 To ask what is the greatest merit of “Hanyu Pinyin Scheme” (hereinafter referred to as “Scheme”), in my opinion, we must mention the realization of computerized Chinese character system. Computer Chinese system is the key input system. The existing input methods can be roughly divided into three categories, or there are three typical ways. The first is the keyboard method. Peking University developed a Chinese computer system is the use of this system. This is similar to the old Chinese typewriter, a word-by-key approach. Although there are advantages of self-taught but there is the disadvantage that the speed is not easy to increase, on the other hand, there is the danger of causing occupational diseases (vision loss) and therefore unpopular. The second is glyph coding. This is in accordance with the special design