28. Different Internal CPU Bus Organization
The module addresses different internal CPU bus organizations, focusing on the transition from single bus architectures to multiple bus architectures. It discusses the advantages of parallel processing with multiple buses, efficiency improvements for control and signal paths, and the implications for various CPU registers including the program counter, memory address register, and memory data register. Overall, the content emphasizes a conceptual understanding of how multiple buses can optimize data flow and processing speed in CPU architectures.
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What we have learnt
- Multiple bus architectures allow for parallel processing, which speeds up operations and reduces the number of control signals required.
- Higher costs and complexity in design are trade-offs associated with implementing multiple buses.
- Understanding the changes in control signals and CPU components with multi-bus systems is crucial for enhancing computer architecture design.
Key Concepts
- -- Single Bus Architecture
- A CPU design where all data and control signals are transmitted over a single bus, sequentially accessing registers and memory.
- -- Multiple Bus Architecture
- A design approach where multiple buses are used to simultaneously transfer data and control signals, allowing for parallel operations.
- -- Program Counter (PC)
- A register that holds the address of the next instruction to be executed in the CPU, with operations impacted by bus architecture.
- -- Memory Data Register (MDR)
- A register that temporarily holds data being transferred to or from memory, with increased ports enabling faster data movement.
- -- Arithmetic and Logic Unit (ALU)
- A critical component of the CPU that performs arithmetic and logical operations, with inputs affected by the bus organization.
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