IGCSE · AS & A LEVEL · COMPUTER SCIENCE
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Topic notes, exam-style practice and coding challenges for Cambridge IGCSE Computer Science (0478) and AS & A Level Computer Science (9618).
Quick quiz · Data representation
What is the denary value of the 8-bit binary number 0110 1001?
A. 96
B. 105 ✓
C. 150
64 + 32 + 8 + 1 = 105. Add the place values wherever there is a 1.
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AGES 14–16
IGCSE Computer Science
Syllabus 0478
- Paper 1 · Computer Systems
- Paper 2 · Algorithms, Programming and Logic
AGES 16–18
AS & A Level Computer Science
Syllabus 9618
- Paper 1 · Theory Fundamentals
- Paper 2 · Problem-solving and Programming Skills
- Paper 3 · Advanced Theory
- Paper 4 · Practical
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