18. OCR A Level (H046-H446) SLR4 - 1.2 BIOS
118. OCR A Level (H046-H446) SLR18 - 2.1 Abstraction & reality
15. OCR A Level (H046-H446) SLR4 - 1.2 Interrupts
13. OCR A Level (H046-H446) SLR4 - 1.2 Need for operating systems
17. OCR A Level (H046-H446) SLR4 - 1.2 Types of operating system
21. OCR A Level (H046-H446) SLR5 - 1.2 The nature of applications
20. OCR A Level (H046-H446) SLR4 - 1.2 Virtual machines
116. OCR A Level (H046-H446) SRL18 - 2.1 The nature of abstraction
19. OCR A Level (H046-H446) SLR4 - 1.2 Device drivers
121. OCR A Level (H046-H446) SLR19 - 2.1 Determining preconditions
64. OCR A Level (H046-H446) SLR12 - 1.3 HTML
39. OCR A Level (H446) SLR7 - 1.2 Object-oriented languages part 4
142. OCR A Level (H446) SLR24 - 2.2 Divide & conquer
55. OCR A Level (H446) SLR10 - 1.3 Referential integrity
58. OCR A Level (H046-H446) SLR11 - 1.3 TCP IP, DNS & protocol layers
117. OCR A Level (H046-H446) SLR18 - 2.1 The need for abstraction
11. OCR A Level (H046-H446) SLR3 - 1.1 RAM and ROM
114. OCR A Level (H046-H446) SLR17 - 1.5 Moral, social & ethical issues part 4
38. OCR A Level (H446) SLR7 - 1.2 Object-oriented languages part 3
89. OCR A Level (H046-H446) SLR14 - 1.4 Data structures part 3 - Stacks & queues