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Revision Book

Revision Book. 1. Hardware. State the purpose of the CPU. Describe the function of the CPU as fetching and executing instructions stored in memory. Explain how common characteristics of CPUs such as clock speed, cache size and number of cores affect their performance.

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Revision Book

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  1. Revision Book 1. Hardware

  2. State the purpose of the CPU

  3. Describe the function of the CPU as fetching and executing instructions stored in memory

  4. Explain how common characteristics of CPUs such as clock speed, cache size and number of cores affect their performance.

  5. Explain why data is represented in computer systems in binary form

  6. Understand and produce simple logic diagrams using the operations NOT, AND and OR

  7. Produce a truth table from a given logic diagram

  8. Describe the difference between RAM and ROM

  9. Explain the need for ROM in a computer system

  10. Describe the purpose of RAM in a computer system

  11. Explain how the amount of RAM in a personal computer affects the performance of the computer

  12. Explain the need for virtual memory

  13. Describe cache memory

  14. Describe flash memory

  15. Discuss how changes in memory technologies are leading to innovative computer designs.

  16. Understand the need for input and output devices

  17. Describe suitable input devices for a wide range of computer controlled situations

  18. Describe suitable output devices for a wide range of computer controlled situations

  19. Discuss input and output devices for users with specific needs

  20. Explain the need for secondary storage

  21. Describe common storage technologies such as optical, magnetic and solid state

  22. Select suitable storage devices and storage media for a given application and justify their choice using characteristics such as capacity, speed, portability, durability and reliability

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