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Microprocessor

Microprocessor
How many 16-bit special purpose registers are present in 8085 microprocessor?

 8
 16
 6
 2

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Microprocessor
Which one of the following instruction may be used to clear the accumulator content irrespective of its initial value?

 MOV A, 00H
 ORA A
 CLR A
 SUB A

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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
 XCHG & DAD B
 XTHL & DAD H

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

 16
 20
 8
 12

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Microprocessor
Which instruction is required to rotate the content of accumulator one bit right along with carry?

 RRC
 RAL
 RLC
 RAR

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

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