横向
1
Data type with true or false values
4
Computer that provides services to others
6
Global computer network
8
Programs and applications on a computer
12
Computer model of a real-world system
纵向
2
Ordered collection of data elements
3
Process of finding and fixing code errors
5
Encode data to keep it secure
7
Collection of web pages
9
Physical components of a computer
10
Rules for data communication
11
Reusable block of code
