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CJNE instruction makes _______

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CJNE instruction makes _______

(a) the pointer to jump if the values of the destination and the source address are equal

(b) sets CY=1, if the contents of the destination register are greater then that of the source register

(c) sets CY=0, if the contents of the destination register are smaller then that of the source register

(d) none of the mentioned

The question was posed to me during an online interview.

The above asked question is from Arithmetic and Logic Instructions in chapter 8051 Microcontroller of Microcontroller

1 Answer

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by (24.2k points)
Right option is (d) none of the mentioned

Explanation: In CJNE command, the pointer jumps if the values of the two registers are not equal and it resets CY if the destination address is larger then the source address and sets CY if the destination address is smaller then the source address.

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