Text, sound and images
1.2What the syllabus asks of you
- Understand how and why a computer represents text and the use of character sets, including American standard code for information interchange (ASCII) and Unicode
- Understand how and why a computer represents sound, including the effects of the sample rate and sample resolution
- Understand how and why a computer represents an image, including the effects of the resolution and colour depth
Read the notes first
Chapter 1: Text, sound and images
Drill this topic
All 13 questions on Text, sound and images, untimed — answer on paper, then mark yourself against the mark scheme.
Make a worksheet
Choose the years and how many questions, then print it with the answers on separate pages.
13 questions
These are structured questions, answered in working rather than by picking an option, so they are not listed here one by one. The drill above puts each in front of you with its mark scheme to check against.