Correct option is D
The
address bus in a computer system is responsible for carrying the addresses of data between the CPU and main memory. This bus allows the CPU to specify the memory location of data or instructions it wants to read from or write to, enabling effective data access and management.
Important Key Points:
1.
Address Transfer: The address bus carries the unique addresses of data or instructions, crucial for the CPU to locate data in memory.
2.
One-Way Bus: Typically, the address bus operates in one direction, from the CPU to memory, as it only provides location information.
3.
System Capacity: The width of the address bus determines the system’s maximum addressable memory, impacting overall capacity.
Knowledge Booster:
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Control Bus: Sends control signals between the CPU and other components, coordinating operations like read, write, and interrupt requests.
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Data Bus: Transfers actual data between the CPU and memory or I/O devices.
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Status Bus: Rarely referenced separately but sometimes indicates the operational state of the system or various components.