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Central Processing Unit (CPU) Architecture past paper questions

Computer Science 9618 · Processor Fundamentals. Von Neumann and stored program; general and special registers PC, MAR, MDR, ACC, IX, CIR, status; ALU, CU, clock, IAS; address/data/control buses; performance, cores, bus width, clock, cache; USB, HDMI, VGA; fetch-execute and register transfer; interrupts and ISR.

It came up in 43 of 104 papers, for about 7 marks a paper when it does. It last came up in October/November 2025.

Often set with Assembly Language, Operating Systems, Computers and their components, Data Representation.

48 questions, newest first

  1. 9618/11/O/N/25 Question 6 parts (a) (b) · 4 marks
  2. 9618/12/O/N/25 Question 3 parts (a(ii)) (c) · 6 marks
  3. 9618/13/O/N/25 Question 6 part (b) · 4 marks
  4. 9618/11/M/J/25 Question 6 part (a(iii)) · 2 marks
  5. 9618/12/M/J/25 Question 1 · 9 marks
  6. 9618/13/M/J/25 Question 2 · 10 marks
  7. 9618/11/O/N/24 Question 3 parts (a) (b(i)) (b(ii)) · 7 marks
  8. 9618/11/O/N/24 Question 8 · 4 marks
  9. 9618/12/O/N/24 Question 3 parts (a) (b) · 8 marks
  10. 9618/11/O/N/23 Question 5 · 12 marks
  11. 9618/12/O/N/23 Question 8 parts (c(i)) (c(ii)) · 4 marks
  12. 9618/13/O/N/23 Question 7 part (d) · 3 marks
  13. 9618/13/O/N/23 Question 9 · 13 marks
  14. 9618/11/M/J/23 Question 6 · 5 marks
  15. 9618/12/M/J/23 Question 5 parts (a) (b) (c(i)) (c(ii)) · 8 marks
  16. 9618/13/M/J/23 Question 7 parts (b) (c) · 6 marks
  17. 9618/11/O/N/22 Question 5 · 11 marks
  18. 9618/11/O/N/22 Question 7 parts (d) (e) · 4 marks
  19. 9618/12/O/N/22 Question 7 part (c) · 3 marks
  20. 9618/13/O/N/22 Question 4 · 7 marks
  21. 9618/11/M/J/22 Question 6 parts (a(i)) (a(ii)) (b) · 12 marks
  22. 9618/13/M/J/22 Question 2 · 8 marks
  23. 9608/11/O/N/21 Question 6 · 10 marks
  24. 9618/11/O/N/21 Question 6 part (a) · 4 marks
  25. 9618/12/O/N/21 Question 7 part (a) · 3 marks
  26. 9618/12/O/N/21 Question 8 parts (a(i)) (a(ii)) · 5 marks
  27. 9618/13/O/N/21 Question 6 part (a) · 4 marks
  28. 9608/11/M/J/21 Question 3 parts (a) (d) · 6 marks
  29. 9608/12/M/J/21 Question 2 · 4 marks
  30. 9608/12/M/J/21 Question 5 parts (a) (b) · 3 marks
  31. 9608/13/M/J/21 Question 3 part (d) · 3 marks
  32. 9618/11/M/J/21 Question 3 part (a) · 5 marks
  33. 9618/12/M/J/21 Question 5 parts (a) (b) · 9 marks
  34. 9618/13/M/J/21 Question 3 part (a) · 5 marks
  35. 9608/11/M/J/20 Question 6 part (b) · 4 marks
  36. 9608/12/M/J/20 Question 2 part (c(iii)) · 4 marks
  37. 9608/13/M/J/20 Question 2 parts (c(i)) (c(ii)) · 2 marks
  38. 9608/11/O/N/19 Question 1 parts (a) (b(i)) (b(ii)) · 9 marks
  39. 9608/12/M/J/19 Question 3 part (a) · 3 marks
  40. 9608/13/M/J/19 Question 4 parts (c(i)) (c(ii)) · 7 marks
  41. 9608/12/O/N/18 Question 4 · 13 marks
  42. 9608/13/O/N/18 Question 6 parts (a(i)) (a(ii)) (b) · 6 marks
  43. 9608/11/M/J/18 Question 8 parts (a) (b(i)) (b(ii)) · 6 marks
  44. 9608/13/M/J/18 Question 3 parts (a) (b) · 8 marks
  45. 9608/12/O/N/17 Question 4 parts (a) (b) · 7 marks
  46. 9608/13/O/N/17 Question 4 part (a) · 5 marks
  47. 9608/11/M/J/16 Question 3 · 8 marks
  48. 9608/12/M/J/16 Question 3 · 8 marks

More in Processor Fundamentals: Assembly Language, Bit manipulation.

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