横向
1
Information processed by a computer
3
Programs and applications on a computer
4
Point where user interacts with system
9
Computer model of a real-world system
10
Rules for data communication
纵向
1
Organized collection of stored data
2
Reusable block of code
5
Main processor of a computer
6
Security system blocking unauthorized access
7
Computer that provides services to others
8
Unit of digital information equal to 8 bits