Finally??

Yes, this is a little bit delayed, but 3 days before the final computer science paper 1, I’m releasing this guide to help you all study.

cover page

What is this?

This is essentially a bank of notes for IGCSE computer science, the theory part. I will chop up my CSRG G2 semester 1 guide, which has extensive coverage of logic gates and programming, and release it independently, later. These notes are very, very detailed, so it is also a guide to some extent.

For more info, read the Information section at the front of the guide.

PLEASE CONTACT ME IF YOU SPOT ANY MISTAKES OR TYPOS!

DOWNLOAD

Alternatively, view the source code on Github.

CHANGELOG

  • Revision 2: Added Cloud Storage, fix spelling mistakes, improve wording across chapter 2.
  • Revision 3: Add IPv6, fix minor errors in the intro, improve wording in chapter 5.
  • Revision 4: Fix RAM access time, add ISBN-13/Modulo 11 syllabus omission notices, add SSL in chapter 5.
  • Revision 5: Fix spelling errors, formatting errors, add note about possible inclusion of errors.

ERRATA

This details the factual, content-based errors that I may have made.1

  • (fixed in revision 4): SRAM/DRAM access time is in nanoseconds, not milliseconds (pages 38, 39)
  • (fixed in revision 5): DRAM consumes less power (page 39) and not SRAM, the program counter holds the next instruction (page 50)

  1. Idea suggested by Ved Jaggi. Added to the credits list. ↩︎