1. A method for composing a series of requested Chinese characters which are a part of a plurality of predetermined less-frequently-used Chinese characters using a digital computer system, said method comprising the steps of: (a) a storing in a first memory section of said digital computer system a plurality of entire patterns of predetermined frequently-used Chinese characters; (b) storing in a second memory section of said digital computer system command data for composing said predetermined less-frequently-used Chinese characters; (c) retrieving a datum of said command data from said second memory section for one of said requested Chinese characters; (d) processing said retrieved command datum to obtain two selected entire patterns from said first memory section, to obtain two pattern parts, a first pattern part and a second pattern part, from said two selected entire patterns, and to compose said requested Chinese character by using said two pattern parts; and (e) repeating said steps (c) and (d) until said series of requested Chinese characters is entirely composed.