Microprocessor
A bus connected between the CPU and main memory that permits transfer of information between main memory and the CPU is known as

 Memory bus
 Address bus
 DMA bus
 Control bus

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Microprocessor
The interrupt facility is provided in microprocessor to

 stop the microprocessor when desired
 stop the microprocessor when it starts malfunctioning
 change the sequence of the instructions being executed
 keep a control on the working of the microprocessor

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Microprocessor
Ready pin of microprocessor is used

 to indicate that microprocessor is ready to receive inputs
 to indicate that microprocessor is ready to receive outputs
 to provide direct memory access
 to introduce wait state

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