Items of data that may change are called  ????? .

 ?????  data is represented by continuously varaible physical quantities such as voltages.

A  ?????  removes items of data in a last in, first out manner.

A program that allows the user to create models and simulate the real situation is called  ????? .

A rectangular grid made up of rows and columns to organise and store data that require some type of calculation is a  ????? .

Variables whose values cause particular instructions to be completed are  ????? .

A program containing a model that allows the user to make predictions and decisions based on the model is a  ????? .

Items of data that are removed in a first in, first out manner are a  ????? .

A representation of some aspect of the real world is a  ????? .

Data that is represented as discrete quantities such as digits is  ????? .