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Microprocessor

Microprocessor
Which of the following instruction will never affect the zero flag?

 XRA R
 DCR R
 DCX Rp
 ORA R

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Microprocessor
The operations executed by two or more control units are referred as

 Micro-operations
 Multi-operations
 Bi control-operations
 Macro-operations

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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

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

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Microprocessor
The register which holds the information about the nature of results of arithmetic and logic operations is called as

 Process status register
 Condition code register
 Flag register
 Accumulator

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Microprocessor
The forms of IF statements in FORTRAN 77 are called

Logical IF, block IF and arithmetic IF
Logic IF, block IF, arithmetic IF and negate IF
Logical IF and Block IF
Logical IF and arithmetic IF

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Microprocessor
Consider the following statements: In 8085 microprocessor, data-bus and address bus are multiplexed in order to I)Increase the speed of microprocessor. II)Reduce the number of pins. III)Connect more peripheral chips. Which of these statements is/are correct?

 (II) & (III)
 (II) only
 (I), (II) & (III)
 (I) only

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