Explain arithmetic shift micro-operations, Computer Engineering

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Q. Explain arithmetic shift Micro-operations?

In arithmetic shift a signed binary number is shifted to right or to the left. So an arithmetic shift-left causes a number to be multiplied by 2 alternatively ashift-right causes a division by 2. However as in division or multiplication by 2 sign of a number must not be changed, so arithmetic shift should leave sign bit unchanged.

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