SLR1.5 – Systems software OCR GCSE (J277) SLR 1.5 The purpose and functionality of operating systems OCR GCSE (J277) SLR 1.5 Operating systems part 1 OCR GCSE (J277) SLR 1.5 Operating systems part 2 OCR GCSE (J277) SLR 1.5 Utility system software Also in this topic... SLR1.2 – Memory and storage SLR1.3 – Computer networks, connections and protocols SLR1.4 – Network security SLR1.6 – Ethical, legal, cultural and environmental concerns SLR2.4 – Boolean logic
