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The register that may be used as an operand register is

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in Microprocessor by (39.4k points)
The register that may be used as an operand register is

(a) Accumulator

(b) B register

(c) Data register

(d) Accumulator and B register

I have been asked this question during an interview for a job.

Question is taken from Architecture of 8051 topic in section Microcontroller 8051 of Microprocessor

1 Answer

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by (49.2k points)
Right option is (d) Accumulator and B register

The best I can explain: In some instructions, the Accumulator and B register are used to store the operands.

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