Numbers

How to convert positive denary whole numbers into binary numbers (up to and including 8 bits) and vice versa

How to add two binary integers together (up to and including 8 bits) and explain overflow errors which may occur

How to convert positive denary whole numbers into 2-digit hexadecimal numbers and vice versa

How to convert binary integers to their hexadecimal equivalents and vice versa

Binary shifts

Characters

The use of binary codes to represent characters

The term 'character set'

The relationship between the number of bits per character in a character set, and the number of characters which can be represented

ASCII

Unicode

Images

How an image is represented as a series of pixels, represented in binary

Metadata

The effect of colour depth and resolution on:

The quaility of the image

The size of an image file

Sound

How sound can be sampled and stored in digital form

The effect of sample rate, duration and bit depth on:

The playback quality

The size of a sound file