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Digital ElectronicsData Path Circuits

Arithmetic right shift of a two’s-complement signed number differs from logical right shift because arithmetic right shift normally?

  • AReplicates the sign bit into the vacated MSB
  • BAlways inserts 0 into the MSB
  • CRotates the LSB into the MSB
  • DComplements every bit
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Correct Answer: A. Replicates the sign bit into the vacated MSB
Explanation: An arithmetic right shift preserves the sign of a two's-complement value by filling vacated most-significant positions with copies of the sign bit.
Reference: Standard digital electronics: arithmetic shift
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