Data Representation
1.1What the syllabus asks of you
- Show understanding of binary magnitudes and the difference between binary prefixes and decimal prefixes
- Show understanding of different number systems
- Perform binary addition and subtraction
- Describe practical applications where Binary Coded Decimal (BCD) and Hexadecimal are used
- Show understanding of and be able to represent character data in its internal binary form, depending on the character set used
Read the notes first
Chapter 1: Data representation
Drill this topic
All 17 questions on Data Representation, 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.
17 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.

