Across
1
Main processor of a computer
4
Point where user interacts with system
5
Encode data to keep it secure
6
Software designed to harm computers
7
Global computer network
9
Process of finding and fixing code errors
Down
2
Computer model of a real-world system
3
Conversion of data into secret code
8
Rules for data communication
9
Storage medium for digital data
10
Data type with true or false values
11
Convert code into executable program