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Microprocessor

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

 B-C
 PSW
 Stack Pointer
 D-E

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Microprocessor
An e-mail message can be sent to many recipients.

False
True

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Microprocessor
Using DeMorgan’s Theorem we can convert any AND-OR structure into

NOR-NAND
OR-NAND
NAND-NOR
NAND-NAND

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Microprocessor
The addressing mode in instruction PUSH B is

 register indirect
 direct
 immediate
 register

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Microprocessor
The characteristics of RESET OUT signal is/are

 this signal can be used to reset other devices.
 the signal is synchronized to the processor clock.
 all.
 indicates that µp is being reset.

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Microprocessor
The content of the A15-A8 (higher order address lines) while executing “IN 8-bit port address” instruction are

 all bits set (i.e. FFH)
 all bits reset (i.e. 00H)
 same as the content of A7-A0
 irrelevant

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