SLR2.4 – Boolean logic OCR GCSE (J277) SLR 2.4 Simple logic diagrams OCR GCSE (J277) SLR 2.4 Truth tables OCR GCSE (J277) SLR 2.4 Combining Boolean operators OCR GCSE (J277) SLR 2.4 Applying logical operators in truth tables Also in this topic... SLR1.2 – Memory and storage SLR1.3 – Computer networks, connections and protocols SLR1.4 – Network security SLR2.1 – Algorithms SLR2.2 – Programming fundamentals