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Learn: Von Neumann Architecture - The Stored Program Concept
OCR GCSE J277 Computer Science specification
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Welcome!You've already learned about the CPU, registers, and how the fetch-execute cycle works. Today, we'll build on that by exploring the Von Neumann Architecture and its key idea: the Stored Program Concept.
What is Von Neumann Architecture?The Von Neumann Architecture is a design model for computers. It uses a single memory to store both instructions and data. This design allows the CPU to fetch instructions and data from the same memory, making it efficient and flexible.
What is the Stored Program Concept?The Stored Program Concept means that computer instructions (programs) are stored in memory alongside the data they act on. This allows a computer to run different programs without changing its hardware, making it versatile.
Quick check: What is a key feature of Von Neumann Architecture?
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Registers in Von Neumann ArchitectureRegisters like the Program Counter (PC) and Memory Address Register (MAR) help manage the stored program concept. The PC keeps track of the next instruction, while the MAR identifies the memory location to access.
The {{blank0}} register stores the {{blank1}} of the next instruction.
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Why is the Stored Program Concept Important?Without the stored program concept, computers would need hardware changes to run new programs. Instead, programs can be stored in memory and run as needed, making computers flexible and able to handle multiple tasks.
Match the items on the left with their correct pairs on the right
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Review Time!Great work! You've learned about Von Neumann Architecture and the Stored Program Concept. Let's test your understanding with a few questions.
Which of the following are features of Von Neumann Architecture? (Select all that apply)
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Which register points to the memory location of the next instruction?
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Von Neumann Architecture uses {{blank0}} memory to store both {{blank1}} and data.
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