Bit

The smallest unit of data in computing represented by a 1 in binary.

ASCII

American Standard Code for Information Interchange. A 7-bit character set used for representing English keyboard characters.

Source code

The code behind a computer program, written in a programming language.

Optimise

To make a program more efficient. A program can be optimised to run quicker, or to take up less memory.

Operand

Data that is manipulated by the CPU/processor according to the given opcode, eg in the instruction ADD 3, the operand…

Opcode

Operation code. Specifies instructions that can executed by a CPU/processor in machine code, eg in an instruction like “move the…