The invention discloses a Chinese character positive-negative sequence dual-radical quick determining, categorizing and searching method, a
pinyin intelligent
input method, and a method for looking up codes according to positive-negative sequence shape-codes and strokes of Chinese character, wherein the
pinyin intelligent
input method is based on the Chinese character positive-negative sequence dual-radical quick determining, radical classifying and searching method, is used for
transcoding some
Chinese characters according to certain rule while inputting tens of thousands of
Chinese characters of kinds of character sets, is universal to a general keyboard for all-key input without repeated code and to a 12-key keypad for displaying 6 characters at most in the all-key input without page turning. According to the positive and negative radical lists provided by the methods, a positive sequence radical and a negative sequence radical are respectively taken from a top left corner and a lower right corner of each Chinese character, and can be synchronously used for categorizing and searching
Chinese characters and the positive sequence codes and the negative sequence codes in the
input method. The methods provided by the invention can be used for inputting a plurality of character sets, and are superior to a plurality of input methods, so that each person who looks up a dictionary can quickly perform touch-
typing by using a binary
syllabification method, a simple spell method or a full spell method, the
categorization and the search of Chinese characters and the input of a computer, a
mobile phone and the like can be scientifically, quickly and conveniently integrated together.