THE education site for computer science and ICT
1. Introduction
Computer programming involves reading data, making changes, and then writing the new data. While a program is running, it stores this data in the computer's memory as a "variable".
You can store any type of data as a variable. And there are many types, including:
- Characters
- Strings
- Integers
- Graphical objects
- Real (N5 year 2 only)
- Booleans (N5 year 2 only)
- Arrays and lists (N5 year 2 only)
In this section we will describe what each of these types of data are, and how they are stored as variables.
A variable is a piece of data that a program is keeping track of. Computer programs store variables in memory.
