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Q. What is Bus arbitration?
In this technique, I/O interface first needs to control bus and only after that it can request for an interrupt. In this technique because only one of interfaces can control bus so just one request can be made at a time. The interrupt request is acknowledged by CPU on response of that I/O interface places interrupt vector on data lines. An interrupt vector generally contains address of interrupt serving program.
What are the various mechanisms for implementing I/O operations? a) Program controlled I/O b) Interrupts c) DMA
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Register transfer - computer architecture: Register transfer: The output and input gates for register Ri are controlled by the signals Riout and Riin respectively.
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