The Computing Progression Pathways suggests that at the red level, on the theme of Hardware & Processing, a student should demonstrate that he/she:

• Understands the von Neumann architecture in relation to the fetch execute cycle, including how data is stored in memory. (Abstraction) (Generalisation)
• Understands the basic function and operation of location addressable memory. (Abstraction)

The following link to cs4fn articles that illustrate Hardware & Processing – Red Level

• Most computers get round problem of lack of memory using ‘virtual memory’ hardware. What is virtual memory? It’s just a clever way to give the appearance of having more memory than you really do.

  Raspberry Pi: How do you make a $25 computer? [cs4fn-link]

More of our resources, including linked computing ‘story’ booklets can be found in our resources section. You may also want to look at cs4fn’s teacher resources or browse the latest cs4fn magazine.