What did the Von Neumann Architecture do differently to other computer architectures of the time?
It stored both the data and programs being run within memory, so to run a new task all it has to do is run the relevant program from memory.
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What components are included within the Von Neumann Architecture?
A control unit - coordinates the movement of data and instructions. Buses - carry the data/instructions. ALU - carries out calculations and comparisons. Registers - do specific jobs.
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What are other features of a Von Neumann Architecture?
Enough memory (RAM in modern computers) to hold both data and programs. There is a way to input data into the computer and output information.
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What are the issues surrounding the Von Neumann Architecture?
The sharing of memory, the possibility of memory leaks, data bus speed (if it's slower than the speed of the CPU bottlenecks occur) and the data/instructions differences in fetch rates.
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How is the Harvard Architecture different to that of Von Neumann?
It has seperate memory spaces for data and for instructions, each accessed by a different bus.
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What are the advantages of the Harvard Architecture?
Data and instructions can be fetched simultaneously, reduced risk of a bottleneck, less chance of program corruption and the speed of each bus can be optimised seperately.
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What are the issues of the Harvard Architecture?
More physical space is required and the handling of memory is more complex.
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Other cards in this set
Card 2
Front
What components are included within the Von Neumann Architecture?
Back
A control unit - coordinates the movement of data and instructions. Buses - carry the data/instructions. ALU - carries out calculations and comparisons. Registers - do specific jobs.
Card 3
Front
What are other features of a Von Neumann Architecture?
Back
Card 4
Front
What are the issues surrounding the Von Neumann Architecture?
Back
Card 5
Front
How is the Harvard Architecture different to that of Von Neumann?
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