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Microprocessor

Microprocessor
Which of the following is a valid integer constant?

127
127
127
125 + 3

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Microprocessor
The processor status word of 8085 microprocessor has five flags namely:

 S, Z, OV, P, CY
 S, OV, AC, P, CY
 S, Z, AC, P, CY
 S, Z, AC, P, OV

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

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

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Microprocessor
A sequence of two registers that multiplies the content of DE register pair by two and stores the result in HL register pair (in 8085 assembly language) is

 PCHL & DAD D
 XCHG & DAD H
 XTHL & DAD H
 XCHG & DAD B

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Microprocessor
IC 7485 cannot be cascadeD.

True
False

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Microprocessor
Let the content of register C be 00000000 before the instruction DCR C is executed. The content of register C after the after the execution of this instruction will be

 None
 00000001
 11111111
 00000000

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