Rules to which users agree, to reduce the misuse of computer systems. Often found on social networking/collaborative sites.

A register of the CPU in which intermediate arithmetic and logic results are stored.

A step-by-step procedure for solving problems that can be followed by humans and computers.

Initial testing done by the programmer.

A digital circuit in the CPU used to perform arithmetic and logic operations.

Software designed to prevent, detect and remove malware.

Software that helps users perform particular tasks.

Data passed to a sub-program (subroutine) by the main program.

A data structure that contains many items of data of the same type. The data is indexed so that a particular item of data can be easily found.

A program that translates assembly language into machine code.

Giving a value to a variable.

Confirmation that a user’s password has been entered correctly.