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Microprocessor

Microprocessor
IC 7485 cannot be cascadeD.

False
True

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Microprocessor
A microprocessor without the interrupt facility

 is best suited for process control system
 cannot be used for DMA operation
 cannot be interfaced with any I/O devices
 is not useful for process control system

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Microprocessor
HLT opcode means

  load accumulator with contents of register.
  load data to accumulator.
  store result in memory.
  end of program.

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Microprocessor
The data bus of any microprocessor is always

 Bi-directional
 Either unidirectional or bi-directional
 None
 Unidirectional

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Microprocessor
In microprocessor based system I/O ports are used to interface

 all the I/O devices
 the I/O devices and memory chips
 the I/P device only
 the O/P devices only

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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 B
 XTHL & DAD H
 XCHG & DAD H

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