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Microprocessor

Microprocessor
A microcomputer consists of

 I/O device
 memory
 a microprocessor
All of these

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Microprocessor
HLT opcode means

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

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

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

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Microprocessor
The microprocessor issues ALE during first T-state of

 every machine cycle
 memory WRITE cycle only
 fetch cycle only
 memory READ cycle only

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Microprocessor
If m is a power of 2, the number of select lines required for an m-input mux is:

m
2*m
log2 (m)
2^m

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Microprocessor
A microprocessor without the interrupt facility

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

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