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What is a Priority Interrupt?
Ans: A priority interrupt is a type of interrupt that establishes a priority over the many sources to determine which condition is to be serviced first when 2 or more requests arrive simultaneously.
Describe bus.
Ans: When a word of data is transferred among units, all the bits are transferred in parallel over a set of lines which is called bus. In apart to the lines that carry the data, the bus must have lines for control purposes and address.
Explain synchronous bus.
Ans: Synchronous buses are the ones of the bus in which each item is transferred during a time slot (clock cycle) known to the source and destination units both. Synchronization can be gain by connecting both units to a common clock source.
What are the various mechanisms for implementing I/O operations? a) Program controlled I/O b) Interrupts c) DMA
Program Level : It is the next level consisting of independent programs for parallelism. Coarse Granularity size is used at this level containing ten thousands of instructions.
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creating a control flow question for atm system
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