AQA 8525 – SLR5 – Hardware and software GCSE AQA SLR5 Hardware and software – an introduction GCSE AQA SLR5 The purpose and functionality of operating systems GCSE AQA SLR5 Operating systems part 1 GCSE AQA SLR5 Operating systems part 2 GCSE AQA SLR5 Utility system software Also in this topic... AQA 8525 – SLR1 – Systems architecture AQA 8525 – SLR2 – Memory and storage AQA 8525 – SLR10 – Robust and secure programming AQA 8525 – SLR13 – Data representation AQA 8525 – SLR14 – Relational databases and SQL