SLR2.4 – Computational logic OCR GCSE SLR2.4 Why data is represented in binary OCR GCSE SLR2.4 Simple logic diagrams OCR GCSE SLR2.4 Truth tables OCR GCSE SLR2.4 Computing related mathematics Also in this topic... SLR1.6 – System security SLR1.7 – Systems software SLR2.2 – Programming techniques SLR2.5 – Translators and facilities of languages SLR2.6 – Data representation