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12. OCR A Level (H046-H446) SLR3 - 1.1 Virtual storage
13. OCR A Level (H046-H446) SLR4 - 1.2 Need for operating systems
11. OCR A Level (H046-H446) SLR3 - 1.1 RAM and ROM
16. OCR A Level (H046-H446) SLR4 - 1.2 Scheduling
15. OCR A Level (H046-H446) SLR4 - 1.2 Interrupts
130. OCR A Level (H046-H446) SLR21 - 2.1 Decisions & program flow
65. OCR A Level (H046-H446) SLR12 - 1.3 CSS
64. OCR A Level (H046-H446) SLR12 - 1.3 HTML
21. OCR A Level (H046-H446) SLR5 - 1.2 The nature of applications
20. OCR A Level (H046-H446) SLR4 - 1.2 Virtual machines
102. OCR A Level (H046-H446) SLR15 - 1.4 Logic gates & truth tables
71. OCR A Level (H046-H446) SLR12 - 1.3 Lossy vs lossless