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Microprocessor

Microprocessor
SPHL instruction copies the content of H-L register pair to the _________.

 D-E
 Stack Pointer
 PSW
 B-C

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Microprocessor
In 8085 microprocessor which one of the following statement is wrong

 serial I/O is not possible
 there is a pin available for serial input
 there is a pin available for serial output
 serial I/O is possible through SIM and RIM instruction

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Microprocessor
DMA signal/signals in 8085 is/are

 HOLD.
 All.
 READY.
 HLDA.

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Microprocessor
XCHG instruction exchanges the content of H-L with ______ register pair.

 Stack Pointer
 B-C
 D-E
 PSW

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Microprocessor
During the execution of the instruction, the ________tests the status and control flags and updates them based on the results of executing the instruction.

 Bus Interface Unit (BIU)
 Execution Unit (EU)
 Both ‘c’ and ‘d’
 None of these

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Microprocessor
The address bus width of a microprocessor which is capable of addressing 64 Kbytes of the memory is

 16
 8
 20
 12

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