That Blue Square Thing

Syllabus content:
PDF iconUnit 3 content - PDF doc to download and print
Note: this syllabus content is a slightly amended version of the one published freely on the web by AQA. I have made very minor adjustments to remove some content less suitable for students to use and it is presented here simply to allow the children I teach to download a usable copy of the syllabus content. It is copyright AQA and reproduced here simply to make access easier for students. No attempt to claim copyright is being made, although I could have copied the text into my own interpretation...

AQA Computer Science GCSE

September 2018: this area of the site is being built just now. There are areas where there is no content yet. That will get added over the next 6 months or so.

Data Representation

I am currently (autumn 2018) teaching this unit so things will keep on getting added as I do so. This means that more pages are likely to get created - of what you were looking for used to be on this page it might have been moved to one of the subpages on the left.

This part of the course is all about understanding how computers use binary numbers to store information and instructions. This includes text, images and sound as well as instructions in programs and more complex data such as video files.

There are five main parts of the syallabus here:

  1. Binary numbers
  2. Characters, words and text
  3. Images - pictures and photographs
  4. Sound files
  5. Data compression

None of this is too hard in itself, although some of the binary and hexadecimal is a bit tricky. But it's stuff that you have to actually learn and practice doing to be confident with in an exam.