照汗青
幼苗
共回答了20个问题采纳率:65% 举报
a microcomputer is set in this pen and a srceen is on it ,when you meet a word you don't know how to write ,just tell the pen ,it'll show you on the screen .it will worn you when you write a wrong word and show the right one on the screen ; the red light will be lightting to worn you if you the style you sit is no right
1年前
8