Computer Science › Section C · Data manipulation › Topic C.1
Computer architecture: CPU and stored programs
Storing bits is only half of computing; something has to change them. This topic opens up the processor, shows how it trades data with memory over a bus, and explains the idea that made modern computers possible: keeping the program itself in memory.
In this topic
- From storing data to changing it
- The three parts of a CPU
- The bus: how the CPU talks to memory
- Worked example: applying a discount
- The von Neumann model
- Programming by rewiring
- The stored-program concept
- Registers, cache, memory and mass storage
- Worked example: where does each item live?
- Common mistakes to avoid
- Key takeaways
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