Across
1
Security system blocking unauthorized access
4
Instructions written for a computer
5
Wireless internet connection
7
Pointer on a computer screen
8
Conversion of data into secret code
11
Named storage location in code
12
Global computer network
Down
2
Smallest unit of a digital image
3
Function that calls itself
4
Main processor of a computer
6
Computer model of a real-world system
9
Set of instructions for a computer
10
Computer that provides services to others