SLR1.1 – Systems architecture OCR GCSE SLR1.1 The Von Neumann Architecture OCR GCSE SLR1.1 How common characteristics of CPUs affect their performance OCR GCSE SLR1.1 Embedded systems Also in this topic... SLR1.5 – Network topologies – protocols and layers SLR1.6 – System security SLR2.2 – Programming techniques SLR2.4 – Computational logic SLR2.6 – Data representation