COMPUTER SCIENCE AND ENGINEERING
COMPUTER ARCHITECTURE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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address bus
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data bus
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MAR
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MDR
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Detailed explanation-1: -Detailed Solution. Statement I: Data bus sends data between the processor, memory unit, and the I/O devices. Data Bus: Data Bus carries data between the processor, the memory unit, and the input/output devices.
Detailed explanation-2: -A data bus is used to transfer data between the memory and the CPU. The data bus is bidirectional and the address bus is unidirectional.
Detailed explanation-3: -The system level bus (as distinct from a CPU’s internal datapath busses) connects the CPU to memory and I/O devices. Typically a system level bus is designed for use as a backplane.
Detailed explanation-4: -DMA Data Transfer Scheme Transferring bulk data using a microprocessor consumes more time. Therefore, the microprocessor performs the data transfer between an I/O device and memory using this DMA technique. For a DMA transfer, I/O devices must also contain electronic circuitry to generate control signals.
Detailed explanation-5: -Hence the correct answer is Single BUS structure.