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Microprocessor

Microprocessor
Which one of the following microprocessor has 16-bit data bus?

 8085
 Z-80
 6502
 68000

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Microprocessor
Which of the following instruction is not possible in 8085?

 POP D
 POP B
 POP 30 H
 POP PSW

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Microprocessor
The characteristics of RESET OUT signal is/are

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

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Microprocessor
A microprocessor differentiates between op code, data/address at any time by

 the program counter
 the stack pointer
 its internal registers
 the sequence in which memory contents are fetched by it

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

 D-E
 PSW
 B-C
 Stack Pointer

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Microprocessor
In one’s complement 8 bit representation 11111111 represents

1
+0
-0
-1

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