横向
1
Computer model of a real-world system
6
Programs and applications on a computer
7
Physical components of a computer
8
Point where user interacts with system
9
Security system blocking unauthorized access
纵向
2
Unit of digital information equal to 8 bits
3
Connected group of computers
4
Conversion of data into secret code
5
Software designed to harm computers
10
Rules for data communication
11
Collection of web pages
12
Set of instructions for a computer
13
Capacity of a data connection