CS01-04 Computer Science Watch
Denary and hexadecimal
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In this lesson
In this video you'll learn about denary and hexadecimal for GCSE Computer Science, with worked examples and the mistakes examiners report. By the end you'll be able to convert between denary and hexadecimal in both directions for values 0 to 255.
What it covers
- 0:54 Denary and hexadecimal: the six extra digits have to come
- 3:06 Two hundred and five now has to become two hexadecimal digits, and one question gets you the whole way there
- 5:22 Small values are the ones to be careful with, so the next one is deliberately tiny
- 7:05 Take seven E, and turn that back into an ordinary denary number
- 8:29 Common mistakes: a single dropped zero has a line
Key words
For: AQA GCSE 8525, OCR GCSE J277
On the specification
| Board | Spec | Statement |
|---|---|---|
| AQA GCSE 8525 | 3.3.2 | Converting between number bases |
| OCR GCSE J277 | 1.2.4 | Data storage - Numbers |
For teachers
This GCSE Computer Science lesson teaches denary and hexadecimal. By the end, students should be able to convert between denary and hexadecimal in both directions for values 0 to 255. It works through three worked examples and the mistakes examiners report.