SLR1.7 – Systems software OCR GCSE SLR1.7 The purpose and functionality of systems software OCR GCSE SLR1.7 Operating system part 1 OCR GCSE SLR1.7 Operating system part 2 OCR GCSE SLR1.7 Utility system software Also in this topic... SLR1.4 – Wired and wireless networks SLR1.6 – System security SLR1.8 – Ethical – Legal – Cultural and Environmental concerns SLR2.2 – Programming techniques SLR2.6 – Data representation