Microprocessor
In microprocessor based system DMA refers to

None of these
 direct memory access for the user
 direct memory access for microprocessor
 direct memory access for the I/O device

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Microprocessor
Which one of the following is not correct?

 An interrupt signal is required at the start of every program
 An instruction is a set of bits that defines a computer operation
 Bus is a group of wires
 Bootstrap is a technique or device for loading first instruction

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