☰ Microprocessors (Electrical Engineering) - MCQs

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Q19.

In case of dynamic memory

  • A. contents tends to decay over a period of time
  • B. contents are retained without distortion
  • C. the speed is slow as compared to static memory
  • D. all of these
    ✍ Discuss    
Q20.

The present microinstruction fetched from a microprogrammed control unit is held in the

  • A. next address register
  • B. parallel priority
  • C. polling
  • D. serial line priority
    ✍ Discuss    
Q21.

The serial connection of interrupt lines for establishing hardware priority is known as

  • A. daisy chaining priority
  • B. parallel priority
  • C. polling
  • D. series line priority
    ✍ Discuss    
Q22.

A semiconductor ROM is preferred to a semiconductor RAM because

  • A. ROM cheaper than RAM
  • B. ROM is faster
  • C. ROM does not required power supply for their operation
  • D. program stored in the ROM cannot be altered
    ✍ Discuss    
Q23.

Which one of the statement is correct?

  • A. ROM is read writing memory
  • B. PC points to the last instruction that was executed
  • C. stack works on the principle of LIFO
  • D. all instructions affected the flags
    ✍ Discuss    
Q24.

Control bus is used for transmitting and receiving control signals between

  • A. processor and keyboard
  • B. processor and various devices
  • C. processor and memory
  • D. input devices and memory
    ✍ Discuss    
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