Discussion
Bus arbitration, Bus Request and Bus Grant are terms used in :
Answer: C
These terms are used in direct memory access.
In DMA, a DMA controller must take over the system bus from the processor to transfer data directly between memory and a peripheral. It requests the bus (Bus Request, or HOLD in the 8085/8086), the processor grants it (Bus Grant, HLDA), and the logic that decides which master gets the bus is bus arbitration.
Serial communication, memory map design and address/data multiplexing involve no transfer of bus mastership, so these terms do not belong to them.
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