情報通信技術（Information and Communication Technology）
Divide and Conquer （ 分割統治法 ）
Information
■ Language
●Programming
●Natural language
●Symbol
■ Database
●Bookkeeping
●Document
■ Science
Communication
■ Network
●Artificial Intelligence
●Security
■ Electricity
■ Electronic
■ Light
Technology
■ Mathematics
●Algorithm
-Function
■ Hardware
■ Software
●Application
■ Engine