Microprocessor
Which of the data transfer is not possible in microprocessor

 memory to memory
 memory to accumulator
 accumulator to memory
 I/O device to accumulator

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Microprocessor
The output data lines of microprocessor and memories are usually tristated because

 More than one device can transmit information over the data bus by enabling only one device at a time
 The data line can be multiplexed for both input and output
 More than one device can transmit over the data bus at the same time
 It increases the speed of data transfer over the data bus

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