Across
1
Global computer network
6
Security system blocking unauthorized access
8
Programs and applications on a computer
9
Input device with letter and number keys
10
Rules for data communication
12
Error in computer code
13
Encode data to keep it secure
14
Connected group of computers
Down
2
Portable personal computer
3
Series of commands for a computer
4
Computer model of a real-world system
5
Function that calls itself
7
Reusable block of code
11
Collection of web pages
12
Smallest unit of digital data