Script(文字) : Visible Marks For Record
Condition = a language unit : a letter = 1 : 1
cf. Signal fire(烽火) or sign language(手语) is not a script
Logographic Writing(表意文字)
- Pictograph(象形文字)
Sumerian(B.C 3100), Egyptian(B.C 3000),
Hittite(B.C 1500), Chinese character(汉字, B.C 1300)
Phonographic Writing(表音文字)
- A syllabic script(音