Define various classes of interrupts, Computer Engineering

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Q. Define Various classes of Interrupts?

Figure below gives list of some common interrupts and events which causes occurrence of those interrupts.

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Figure: Various classes of Interrupts

Interrupts are a useful mechanism. They are helpful in improving the efficiency of processing. How? This is to fact that almost all external devices are slower than processor so in a typical system a processor has to continually test whether an input value has arrived or a printout has been finished in turn wasting lots of CPU time. With the interrupt facility CPU is freed from task of examining status of I/O devices and can do useful processing during this time so raising the processing efficiency.


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