Microprocessor
The stack pointer

 resides in microprocessor
 resides in ROM
 may be in RAM or ROM
 resides in RAM

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Microprocessor
How can we make any bit of a register “1”?

 OR that bit with “1” and remaining bits with “0”.
 OR that bit with “0” and remaining bits with “1”.
 AND that bit with “0” and remaining bits with “1”.
 AND that bit with “1” and remaining bits with “0”.

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

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

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