汉字万用数码输入法
chinese characters versatile numeral input techniq
数字-数字数据变换器
digital-to-digital data converter
自动数字输入-输出系统
automatic digital input-out-put system
带正负号数字数字系统
signed digit number system
光隔离数字输入
optically isolated digital input
OIDI
汉字输入法
input method of Chinese characters
Chinese character input method
Chinese input method
chinese input methods