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A three and a half digit display can show a maximum reading of

  • A.1999
  • B.3999
  • C.999
  • D.9999

Answer: A

The half digit is the most significant and can display only a blank or a one, so the count runs from 0000 to 1999. Overrange beyond that requires the next range to be selected, which is what auto-ranging does automatically.

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