It depends what ARM you're talking about. The ARM7 uses the Van Neumann bus architecture (one bus for both data and instructions, and never both at the same time). The ARM9 uses a Harvard bus architecture (separate buses, one each for data and instructions).
The main limitation of the von Neumann architecture is known as the "von Neumann bottleneck". This is due to the fact that all instructions and all data must pass through the same shared common multiplexed bus to get in or out of the processor, sooner or later things have to wait for other things to get access to this multiplexed bus and the processor gets starved for instructions and/or data. The result is the processor is unable to maintain its designed performance but waits idle instead of doing work. There is no complete solution to the "von Neumann bottleneck" with the von Neumann architecture, but many things have been tried over the years. The most effective one so far has been the use of independent instruction and data L1 caches. This at least allows blocks of frequently needed instructions and data to be held in 2 separate very high speed memories and made available to the processor on 2 independent busses, so that instructions won't have to wait for data and data won't have to wait for instructions. But even with this, the bottleneck still occurs on the main bus when less frequently needed instructions and/or data must be accessed.
Rivals? IBM had an architecture that Apple wanted for Mac, the POWER, and Motorola had their 88000 microprocessor memory bus interface. They combined these to define the PowerPC subset architecture specification of the POWER architecture specification. IBM also wanted to build less expensive POWER workstations and needed help converting the POWER implementation, which was often a multi-card CPU to a single chip microprocessor to do so.
The name of the bus boycott was the Montgomery Bus Boycott.
because she sat in the bus but did not to leave
8085 has von neumann architecture it was derived after the name of mathematician john von neumann. its having 16 address bus and 8 bit data bus. it can access 2^16 individual memory location.
In the Von Neumann (not "von humann") architecture instructions and data share the same bus and address space, while in the Harvard architecture instructions and data are accessed through separate buses.
It depends what ARM you're talking about. The ARM7 uses the Van Neumann bus architecture (one bus for both data and instructions, and never both at the same time). The ARM9 uses a Harvard bus architecture (separate buses, one each for data and instructions).
Bus architecture is the pathway between the CPU and other peripherals. It is usually a shared input/output pathway. Bus is short for omnibus, which means, for all.
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bus is long
I asked what is the application of bus architecture
PCI-Express
Compared to single-bus architecture, the using of multiple-bus architecture have a great advantage in speed and of course, will affect performance also. Instead of using single-bus architecture, it is more convenient to use multiple-bus architecture. Using multiple-bus architecture will make each device to connect to own bus, which means that each device will have its own bus. This way, it will be faster to transfer data of each devices, so the data transfer doesn't have to stuck like in the single-bus architecture where many devices are connected to a single-bus, that will eventually reach the capacity of the bus and thus will make the data "queue". Of course, it will cost more to have multiple bus, but the cost will not match the need of faster speed, compared to the one of that single-bus architecture.
Multiple bus structure permit several devices to work simultaneously, therefore improving the computer's speed. In addition, it isolate processor from I/O traffic and support wider variety of interfaces.
It could be star or bus, but historically, coax cable was used in bus architecture.
The architecture of the Enterprise service bus is quite unique, and it revolutionized the service bus industry. Issac Farraday was the engineer who originally developed the plans for the enterprise service bus.