Computer science o level

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For O Level Computer Science, I'd honestly recommend building your own notes from past papers rather than hunting for someone else's. Here's what worked for me and a lot of students I know:

1. Download the last 5 years of past papers and mark schemes, then do them topic by topic instead of full papers at first. The examiner repeats question styles a lot, especially in data representation and logic gates.
2. For the programming section, write out pseudocode by hand regularly — tracing and dry-running code on paper is where most marks are lost, and it's a skill you only build by practice.
3. Make one-page summary sheets for each topic (binary/hex conversions, number systems, databases, security) and revise them in the final month.

Start this way early and you'll be in a much stronger position than just reading notes. Good luck with your prep!
 
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