0984
Text, Sound and Images
Data Representation · 3 question types
Exam Frequency Analysis
Past paper frequency (2018 to 2024)
This topic accounts for approximately 5% of your exam marks.
stable
Rare
Stable5%
ASCII/Unicode, sound sampling and pixel/colour depth appear regularly as 2 to 4 mark questions.
The standard exam formula for the size of an uncompressed bitmap is:
file size (bits) = image width () × image height (pixels) × (bits per pixel)
To convert to bytes, divide by 8.