横向
1
Reusable block of code
4
Security system blocking unauthorized access
6
Display screen for a computer
7
Smallest unit of digital data
8
Function that calls itself
11
Global computer network
纵向
2
Short-range wireless technology
3
Collection of web pages
5
Rules for data communication
9
Wired networking technology
10
Programs and applications on a computer
12
Connected group of computers